./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 54849713272284bcfc1d249b79bdfa502d33e8d1537f459c00022c26afd8a94c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:42:31,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:42:31,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:42:31,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:42:31,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:42:31,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:42:31,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:42:31,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:42:31,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:42:31,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:42:31,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:42:31,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:42:31,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:42:31,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:42:31,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:42:31,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:42:31,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:42:31,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:42:31,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:42:31,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:42:31,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:42:31,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:42:31,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:42:31,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:42:31,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:42:31,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:42:31,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:42:31,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:42:31,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:42:31,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:42:31,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:42:31,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:42:31,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:42:31,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:42:31,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:42:31,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:42:31,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:42:31,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:42:31,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:42:31,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:42:31,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:42:31,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:42:31,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:42:31,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:42:31,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:42:31,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:42:31,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:42:31,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:42:31,728 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:42:31,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:42:31,728 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:42:31,729 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:42:31,730 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:42:31,730 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:42:31,730 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:42:31,730 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:42:31,730 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:42:31,731 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:42:31,731 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:42:31,731 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:42:31,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:42:31,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:42:31,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:42:31,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:42:31,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:42:31,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:42:31,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:42:31,735 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:42:31,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:42:31,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:42:31,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:42:31,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:31,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:42:31,736 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:42:31,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:42:31,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:42:31,737 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:42:31,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:42:31,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:42:31,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:42:31,738 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_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54849713272284bcfc1d249b79bdfa502d33e8d1537f459c00022c26afd8a94c [2022-11-19 06:42:32,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:42:32,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:42:32,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:42:32,057 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:42:32,058 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:42:32,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2022-11-19 06:42:32,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/data/72facf899/418b6c93094543448a5d90492ff3fe31/FLAG1a1b7a802 [2022-11-19 06:42:33,148 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:42:33,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2022-11-19 06:42:33,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/data/72facf899/418b6c93094543448a5d90492ff3fe31/FLAG1a1b7a802 [2022-11-19 06:42:33,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/data/72facf899/418b6c93094543448a5d90492ff3fe31 [2022-11-19 06:42:33,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:42:33,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:42:33,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:33,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:42:33,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:42:33,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:33,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39698ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:33, skipping insertion in model container [2022-11-19 06:42:33,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:33" (1/1) ... [2022-11-19 06:42:33,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:42:33,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:42:39,179 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508632,508645] [2022-11-19 06:42:39,185 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508801,508814] [2022-11-19 06:42:39,186 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508968,508981] [2022-11-19 06:42:39,192 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[509136,509149] [2022-11-19 06:42:39,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:39,302 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:42:39,941 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508632,508645] [2022-11-19 06:42:39,978 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508801,508814] [2022-11-19 06:42:39,979 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508968,508981] [2022-11-19 06:42:39,979 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[509136,509149] [2022-11-19 06:42:39,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:40,310 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:42:40,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40 WrapperNode [2022-11-19 06:42:40,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:40,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:40,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:42:40,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:42:40,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:40,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:40,774 INFO L138 Inliner]: procedures = 678, calls = 4011, calls flagged for inlining = 356, calls inlined = 330, statements flattened = 10401 [2022-11-19 06:42:40,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:40,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:42:40,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:42:40,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:42:40,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:40,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:40,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:40,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:41,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:41,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:41,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:41,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:41,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:42:41,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:42:41,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:42:41,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:42:41,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (1/1) ... [2022-11-19 06:42:41,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:41,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:41,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:42:41,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74fcca7-73c8-48c4-a804-dfa98605a67e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:42:41,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_93 [2022-11-19 06:42:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_93 [2022-11-19 06:42:41,372 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 06:42:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 06:42:41,372 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-19 06:42:41,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-19 06:42:41,372 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_core [2022-11-19 06:42:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_core [2022-11-19 06:42:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-19 06:42:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-19 06:42:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_post_phy_linkchg [2022-11-19 06:42:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_post_phy_linkchg [2022-11-19 06:42:41,373 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 06:42:41,373 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 06:42:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:42:41,374 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:42:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_80 [2022-11-19 06:42:41,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_80 [2022-11-19 06:42:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-19 06:42:41,374 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-19 06:42:41,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:42:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:42:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_rx_ring [2022-11-19 06:42:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_rx_ring [2022-11-19 06:42:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:42:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:42:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 06:42:41,376 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 06:42:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:42:41,376 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:42:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 06:42:41,377 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 06:42:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_current_addr [2022-11-19 06:42:41,377 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_current_addr [2022-11-19 06:42:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:42:41,377 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:42:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_mac [2022-11-19 06:42:41,378 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_mac [2022-11-19 06:42:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_irq_disable [2022-11-19 06:42:41,378 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_irq_disable [2022-11-19 06:42:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_stop_phy_polling [2022-11-19 06:42:41,379 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_stop_phy_polling [2022-11-19 06:42:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 06:42:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 06:42:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 06:42:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 06:42:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 06:42:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 06:42:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 06:42:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 06:42:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 06:42:41,382 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 06:42:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:42:41,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:42:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:42:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:42:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 06:42:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 06:42:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-19 06:42:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-19 06:42:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:42:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 06:42:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 06:42:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_speed_and_duplex [2022-11-19 06:42:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_speed_and_duplex [2022-11-19 06:42:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1c_adapter [2022-11-19 06:42:41,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1c_adapter [2022-11-19 06:42:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 06:42:41,385 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 06:42:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_close [2022-11-19 06:42:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_close [2022-11-19 06:42:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:42:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:42:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_reg [2022-11-19 06:42:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_reg [2022-11-19 06:42:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:42:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_init [2022-11-19 06:42:41,387 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_init [2022-11-19 06:42:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_dbg [2022-11-19 06:42:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_dbg [2022-11-19 06:42:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_regs_len [2022-11-19 06:42:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_regs_len [2022-11-19 06:42:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:42:41,389 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:42:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 06:42:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 06:42:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_free_ring_resources [2022-11-19 06:42:41,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_free_ring_resources [2022-11-19 06:42:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:42:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 06:42:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 06:42:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:42:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:42:41,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:42:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:42:41,392 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:42:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 06:42:41,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 06:42:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 06:42:41,392 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 06:42:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 06:42:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 06:42:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 06:42:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 06:42:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 06:42:41,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 06:42:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_multi [2022-11-19 06:42:41,398 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_multi [2022-11-19 06:42:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:42:41,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:42:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:42:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:42:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 06:42:41,400 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 06:42:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:42:41,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:42:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:42:41,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:42:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:42:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_start_phy_polling [2022-11-19 06:42:41,406 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_start_phy_polling [2022-11-19 06:42:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-19 06:42:41,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-19 06:42:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:42:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:42:41,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:42:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-19 06:42:41,407 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-19 06:42:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:42:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:42:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-11-19 06:42:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-11-19 06:42:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_core [2022-11-19 06:42:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_core [2022-11-19 06:42:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_wait_until_idle [2022-11-19 06:42:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_wait_until_idle [2022-11-19 06:42:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 06:42:41,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 06:42:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 06:42:41,409 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 06:42:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:42:41,409 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:42:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_check_link_status [2022-11-19 06:42:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_check_link_status [2022-11-19 06:42:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 06:42:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 06:42:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_alloc_rx_buffer [2022-11-19 06:42:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_alloc_rx_buffer [2022-11-19 06:42:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1c_adapter [2022-11-19 06:42:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1c_adapter [2022-11-19 06:42:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_io_resume [2022-11-19 06:42:41,411 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_io_resume [2022-11-19 06:42:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_dbg [2022-11-19 06:42:41,411 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_dbg [2022-11-19 06:42:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_wait_mdio_idle [2022-11-19 06:42:41,411 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_wait_mdio_idle [2022-11-19 06:42:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 06:42:41,411 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 06:42:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 06:42:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 06:42:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_vlan_mode [2022-11-19 06:42:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_vlan_mode [2022-11-19 06:42:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_tx_buffer [2022-11-19 06:42:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_tx_buffer [2022-11-19 06:42:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_down [2022-11-19 06:42:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_down [2022-11-19 06:42:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_suspend [2022-11-19 06:42:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_suspend [2022-11-19 06:42:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:42:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:42:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-19 06:42:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-19 06:42:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 06:42:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 06:42:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 06:42:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 06:42:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:42:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:42:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:42:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:42:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 06:42:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 06:42:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:42:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:42:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 06:42:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 06:42:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-19 06:42:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-19 06:42:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_tx_timeout [2022-11-19 06:42:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_tx_timeout [2022-11-19 06:42:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 06:42:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 06:42:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 06:42:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 06:42:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_tpd [2022-11-19 06:42:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_tpd [2022-11-19 06:42:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_hw_set_mac_addr [2022-11-19 06:42:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_hw_set_mac_addr [2022-11-19 06:42:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 06:42:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 06:42:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-19 06:42:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-19 06:42:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 06:42:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 06:42:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_restart_autoneg [2022-11-19 06:42:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_restart_autoneg [2022-11-19 06:42:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_rxbufsize [2022-11-19 06:42:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_rxbufsize [2022-11-19 06:42:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 06:42:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 06:42:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:42:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:42:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_free_irq [2022-11-19 06:42:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_free_irq [2022-11-19 06:42:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-19 06:42:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-19 06:42:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_ext [2022-11-19 06:42:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_ext [2022-11-19 06:42:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 06:42:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 06:42:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 06:42:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 06:42:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:42:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-19 06:42:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-19 06:42:41,491 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_nway_reset [2022-11-19 06:42:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_nway_reset [2022-11-19 06:42:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_dma_ring [2022-11-19 06:42:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_dma_ring [2022-11-19 06:42:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:42:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:42:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:42:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_irq_enable [2022-11-19 06:42:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_irq_enable [2022-11-19 06:42:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-19 06:42:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-19 06:42:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_eeprom_len [2022-11-19 06:42:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_eeprom_len [2022-11-19 06:42:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:42:41,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 06:42:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 06:42:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-19 06:42:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-19 06:42:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_check_eeprom_exist [2022-11-19 06:42:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_check_eeprom_exist [2022-11-19 06:42:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 06:42:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 06:42:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 06:42:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 06:42:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_netpoll [2022-11-19 06:42:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_netpoll [2022-11-19 06:42:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:42:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:42:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 06:42:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 06:42:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 06:42:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 06:42:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_configure [2022-11-19 06:42:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_configure [2022-11-19 06:42:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-19 06:42:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-19 06:42:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_85 [2022-11-19 06:42:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_85 [2022-11-19 06:42:41,498 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_tx_ring [2022-11-19 06:42:41,499 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_tx_ring [2022-11-19 06:42:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_reset [2022-11-19 06:42:41,499 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_reset [2022-11-19 06:42:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_open [2022-11-19 06:42:41,499 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_open [2022-11-19 06:42:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:42:41,499 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:42:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 06:42:41,500 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 06:42:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-19 06:42:41,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-19 06:42:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-19 06:42:41,500 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-19 06:42:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_intr [2022-11-19 06:42:41,501 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_intr [2022-11-19 06:42:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 06:42:41,501 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 06:42:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_power_saving [2022-11-19 06:42:41,501 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_power_saving [2022-11-19 06:42:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_setup_adv [2022-11-19 06:42:41,501 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_setup_adv [2022-11-19 06:42:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 06:42:41,502 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 06:42:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:42:41,502 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:42:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_buffer [2022-11-19 06:42:41,502 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_buffer [2022-11-19 06:42:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_remove [2022-11-19 06:42:41,502 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_remove [2022-11-19 06:42:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:42:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:42:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:42:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_86 [2022-11-19 06:42:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_86 [2022-11-19 06:42:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 06:42:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 06:42:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 06:42:41,503 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 06:42:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_up [2022-11-19 06:42:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_up [2022-11-19 06:42:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-19 06:42:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-19 06:42:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_disable_l0s_l1 [2022-11-19 06:42:41,504 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_disable_l0s_l1 [2022-11-19 06:42:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_resume [2022-11-19 06:42:41,505 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_resume [2022-11-19 06:42:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-19 06:42:41,505 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-19 06:42:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_pcie [2022-11-19 06:42:41,505 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_pcie [2022-11-19 06:42:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 06:42:41,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 06:42:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 06:42:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 06:42:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 06:42:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 06:42:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_shutdown [2022-11-19 06:42:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_shutdown [2022-11-19 06:42:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_aspm [2022-11-19 06:42:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_aspm [2022-11-19 06:42:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2022-11-19 06:42:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2022-11-19 06:42:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-19 06:42:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-19 06:42:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 06:42:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 06:42:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_reg [2022-11-19 06:42:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_reg [2022-11-19 06:42:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:42:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 06:42:41,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 06:42:43,030 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:42:43,048 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:42:43,915 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:42:54,409 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:42:59,016 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:42:59,017 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:42:59,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:59 BoogieIcfgContainer [2022-11-19 06:42:59,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:42:59,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:42:59,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:42:59,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:42:59,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:42:33" (1/3) ... [2022-11-19 06:42:59,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507ffaec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:59, skipping insertion in model container [2022-11-19 06:42:59,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:40" (2/3) ... [2022-11-19 06:42:59,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507ffaec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:59, skipping insertion in model container [2022-11-19 06:42:59,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:59" (3/3) ... [2022-11-19 06:42:59,036 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2022-11-19 06:42:59,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:42:59,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 06:42:59,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:42:59,154 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;@7b74c0cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:42:59,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 06:42:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 2967 states, 1723 states have (on average 1.2391178177597215) internal successors, (2135), 1778 states have internal predecessors, (2135), 1081 states have call successors, (1081), 159 states have call predecessors, (1081), 158 states have return successors, (1074), 1065 states have call predecessors, (1074), 1074 states have call successors, (1074) [2022-11-19 06:42:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 06:42:59,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:59,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:59,176 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:42:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1973494184, now seen corresponding path program 1 times [2022-11-19 06:42:59,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:59,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505657468] [2022-11-19 06:42:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:59,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:43:00,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:43:00,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505657468] [2022-11-19 06:43:00,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505657468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:43:00,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:43:00,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:43:00,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4801390] [2022-11-19 06:43:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:43:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:43:00,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:43:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:43:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:43:00,307 INFO L87 Difference]: Start difference. First operand has 2967 states, 1723 states have (on average 1.2391178177597215) internal successors, (2135), 1778 states have internal predecessors, (2135), 1081 states have call successors, (1081), 159 states have call predecessors, (1081), 158 states have return successors, (1074), 1065 states have call predecessors, (1074), 1074 states have call successors, (1074) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:43:03,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:08,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:11,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:11,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:11,911 INFO L93 Difference]: Finished difference Result 8864 states and 12986 transitions. [2022-11-19 06:43:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:43:11,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-19 06:43:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:11,987 INFO L225 Difference]: With dead ends: 8864 [2022-11-19 06:43:11,988 INFO L226 Difference]: Without dead ends: 5894 [2022-11-19 06:43:12,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:43:12,021 INFO L413 NwaCegarLoop]: 5425 mSDtfsCounter, 4263 mSDsluCounter, 14636 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4279 SdHoareTripleChecker+Valid, 20061 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:12,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4279 Valid, 20061 Invalid, 1991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1988 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-19 06:43:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2022-11-19 06:43:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 5886. [2022-11-19 06:43:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5886 states, 3426 states have (on average 1.2340922358435493) internal successors, (4228), 3524 states have internal predecessors, (4228), 2141 states have call successors, (2141), 317 states have call predecessors, (2141), 315 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2022-11-19 06:43:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5886 states to 5886 states and 8504 transitions. [2022-11-19 06:43:12,748 INFO L78 Accepts]: Start accepts. Automaton has 5886 states and 8504 transitions. Word has length 35 [2022-11-19 06:43:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:12,749 INFO L495 AbstractCegarLoop]: Abstraction has 5886 states and 8504 transitions. [2022-11-19 06:43:12,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:43:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5886 states and 8504 transitions. [2022-11-19 06:43:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 06:43:12,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:12,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:43:12,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:43:12,754 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:43:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2115275140, now seen corresponding path program 1 times [2022-11-19 06:43:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:43:12,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664764767] [2022-11-19 06:43:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:12,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:43:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:43:13,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:43:13,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664764767] [2022-11-19 06:43:13,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664764767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:43:13,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:43:13,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:43:13,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650473954] [2022-11-19 06:43:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:43:13,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:43:13,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:43:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:43:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:43:13,337 INFO L87 Difference]: Start difference. First operand 5886 states and 8504 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 06:43:16,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:18,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:22,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:25,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:26,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:26,515 INFO L93 Difference]: Finished difference Result 5900 states and 8513 transitions. [2022-11-19 06:43:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:43:26,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2022-11-19 06:43:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:26,556 INFO L225 Difference]: With dead ends: 5900 [2022-11-19 06:43:26,556 INFO L226 Difference]: Without dead ends: 5898 [2022-11-19 06:43:26,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:43:26,563 INFO L413 NwaCegarLoop]: 5417 mSDtfsCounter, 4240 mSDsluCounter, 14595 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4254 SdHoareTripleChecker+Valid, 20012 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:26,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4254 Valid, 20012 Invalid, 1991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1988 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-11-19 06:43:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2022-11-19 06:43:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 5890. [2022-11-19 06:43:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 3429 states have (on average 1.2338874307378245) internal successors, (4231), 3527 states have internal predecessors, (4231), 2141 states have call successors, (2141), 318 states have call predecessors, (2141), 316 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2022-11-19 06:43:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8507 transitions. [2022-11-19 06:43:27,005 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8507 transitions. Word has length 40 [2022-11-19 06:43:27,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:27,006 INFO L495 AbstractCegarLoop]: Abstraction has 5890 states and 8507 transitions. [2022-11-19 06:43:27,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 06:43:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8507 transitions. [2022-11-19 06:43:27,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-19 06:43:27,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:27,020 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] [2022-11-19 06:43:27,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:43:27,021 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:43:27,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:27,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1419505256, now seen corresponding path program 1 times [2022-11-19 06:43:27,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:43:27,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560606817] [2022-11-19 06:43:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:27,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:43:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:43:27,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:43:27,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560606817] [2022-11-19 06:43:27,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560606817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:43:27,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:43:27,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:43:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743992081] [2022-11-19 06:43:27,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:43:27,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:43:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:43:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:43:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:43:27,610 INFO L87 Difference]: Start difference. First operand 5890 states and 8507 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) [2022-11-19 06:43:31,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:35,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:37,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:38,560 INFO L93 Difference]: Finished difference Result 5904 states and 8516 transitions. [2022-11-19 06:43:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:43:38,560 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 [2022-11-19 06:43:38,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:38,597 INFO L225 Difference]: With dead ends: 5904 [2022-11-19 06:43:38,597 INFO L226 Difference]: Without dead ends: 5902 [2022-11-19 06:43:38,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:43:38,603 INFO L413 NwaCegarLoop]: 5412 mSDtfsCounter, 4240 mSDsluCounter, 14585 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4253 SdHoareTripleChecker+Valid, 19997 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:38,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4253 Valid, 19997 Invalid, 1991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1988 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-19 06:43:38,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5902 states. [2022-11-19 06:43:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5902 to 5894. [2022-11-19 06:43:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5894 states, 3432 states have (on average 1.2336829836829837) internal successors, (4234), 3530 states have internal predecessors, (4234), 2141 states have call successors, (2141), 319 states have call predecessors, (2141), 317 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2022-11-19 06:43:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5894 states to 5894 states and 8510 transitions. [2022-11-19 06:43:39,018 INFO L78 Accepts]: Start accepts. Automaton has 5894 states and 8510 transitions. Word has length 45 [2022-11-19 06:43:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:39,018 INFO L495 AbstractCegarLoop]: Abstraction has 5894 states and 8510 transitions. [2022-11-19 06:43:39,020 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) [2022-11-19 06:43:39,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5894 states and 8510 transitions. [2022-11-19 06:43:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 06:43:39,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:39,024 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:43:39,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:43:39,025 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:43:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1396208188, now seen corresponding path program 1 times [2022-11-19 06:43:39,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:43:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273417946] [2022-11-19 06:43:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:39,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:43:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-19 06:43:39,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:43:39,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273417946] [2022-11-19 06:43:39,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273417946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:43:39,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:43:39,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:43:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036422151] [2022-11-19 06:43:39,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:43:39,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:43:39,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:43:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:43:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:43:39,500 INFO L87 Difference]: Start difference. First operand 5894 states and 8510 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 06:43:42,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:44,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:48,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:50,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:50,781 INFO L93 Difference]: Finished difference Result 5908 states and 8519 transitions. [2022-11-19 06:43:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:43:50,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2022-11-19 06:43:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:50,823 INFO L225 Difference]: With dead ends: 5908 [2022-11-19 06:43:50,823 INFO L226 Difference]: Without dead ends: 5906 [2022-11-19 06:43:50,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:43:50,829 INFO L413 NwaCegarLoop]: 5417 mSDtfsCounter, 4240 mSDsluCounter, 14595 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 20012 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:50,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 20012 Invalid, 1991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1987 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-11-19 06:43:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2022-11-19 06:43:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 5898. [2022-11-19 06:43:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5898 states, 3435 states have (on average 1.2334788937409025) internal successors, (4237), 3533 states have internal predecessors, (4237), 2141 states have call successors, (2141), 320 states have call predecessors, (2141), 318 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2022-11-19 06:43:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8513 transitions. [2022-11-19 06:43:51,337 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8513 transitions. Word has length 50 [2022-11-19 06:43:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:51,337 INFO L495 AbstractCegarLoop]: Abstraction has 5898 states and 8513 transitions. [2022-11-19 06:43:51,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 06:43:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8513 transitions. [2022-11-19 06:43:51,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 06:43:51,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:51,339 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] [2022-11-19 06:43:51,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:43:51,339 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:43:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -178002728, now seen corresponding path program 1 times [2022-11-19 06:43:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:43:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404934840] [2022-11-19 06:43:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:51,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:43:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-19 06:43:51,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:43:51,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404934840] [2022-11-19 06:43:51,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404934840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:43:51,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:43:51,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:43:51,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866416865] [2022-11-19 06:43:51,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:43:51,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:43:51,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:43:51,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:43:51,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:43:51,683 INFO L87 Difference]: Start difference. First operand 5898 states and 8513 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) [2022-11-19 06:43:54,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:43:58,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:00,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:02,301 INFO L93 Difference]: Finished difference Result 5908 states and 8522 transitions. [2022-11-19 06:44:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:44:02,302 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 [2022-11-19 06:44:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:02,347 INFO L225 Difference]: With dead ends: 5908 [2022-11-19 06:44:02,348 INFO L226 Difference]: Without dead ends: 5906 [2022-11-19 06:44:02,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:44:02,352 INFO L413 NwaCegarLoop]: 3808 mSDtfsCounter, 4240 mSDsluCounter, 7593 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 11401 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:02,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 11401 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1393 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-19 06:44:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2022-11-19 06:44:02,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 5906. [2022-11-19 06:44:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5906 states, 3441 states have (on average 1.2330717814588783) internal successors, (4243), 3539 states have internal predecessors, (4243), 2141 states have call successors, (2141), 322 states have call predecessors, (2141), 320 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2022-11-19 06:44:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 8519 transitions. [2022-11-19 06:44:02,758 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 8519 transitions. Word has length 55 [2022-11-19 06:44:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:02,759 INFO L495 AbstractCegarLoop]: Abstraction has 5906 states and 8519 transitions. [2022-11-19 06:44:02,759 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) [2022-11-19 06:44:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 8519 transitions. [2022-11-19 06:44:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 06:44:02,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:02,762 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:02,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:44:02,762 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:44:02,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1495216282, now seen corresponding path program 1 times [2022-11-19 06:44:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:02,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390972358] [2022-11-19 06:44:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:02,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-19 06:44:03,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:03,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390972358] [2022-11-19 06:44:03,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390972358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:44:03,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:44:03,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:44:03,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838991870] [2022-11-19 06:44:03,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:44:03,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:44:03,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:03,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:44:03,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:44:03,136 INFO L87 Difference]: Start difference. First operand 5906 states and 8519 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:44:05,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:10,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:13,307 INFO L93 Difference]: Finished difference Result 5920 states and 8528 transitions. [2022-11-19 06:44:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:44:13,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-19 06:44:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:13,334 INFO L225 Difference]: With dead ends: 5920 [2022-11-19 06:44:13,334 INFO L226 Difference]: Without dead ends: 5918 [2022-11-19 06:44:13,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:44:13,339 INFO L413 NwaCegarLoop]: 5417 mSDtfsCounter, 4236 mSDsluCounter, 14595 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 20012 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:13,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4246 Valid, 20012 Invalid, 1991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1988 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-19 06:44:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2022-11-19 06:44:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5910. [2022-11-19 06:44:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 3444 states have (on average 1.2328687572590011) internal successors, (4246), 3542 states have internal predecessors, (4246), 2141 states have call successors, (2141), 323 states have call predecessors, (2141), 321 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2022-11-19 06:44:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8522 transitions. [2022-11-19 06:44:13,837 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8522 transitions. Word has length 66 [2022-11-19 06:44:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:13,838 INFO L495 AbstractCegarLoop]: Abstraction has 5910 states and 8522 transitions. [2022-11-19 06:44:13,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:44:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8522 transitions. [2022-11-19 06:44:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 06:44:13,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:13,839 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 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] [2022-11-19 06:44:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:44:13,840 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:44:13,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1172883266, now seen corresponding path program 1 times [2022-11-19 06:44:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:13,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986901187] [2022-11-19 06:44:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-19 06:44:14,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:14,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986901187] [2022-11-19 06:44:14,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986901187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:44:14,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:44:14,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:44:14,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563663809] [2022-11-19 06:44:14,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:44:14,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:44:14,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:14,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:44:14,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:44:14,202 INFO L87 Difference]: Start difference. First operand 5910 states and 8522 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:44:18,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:20,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:24,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:26,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:26,927 INFO L93 Difference]: Finished difference Result 5924 states and 8531 transitions. [2022-11-19 06:44:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:44:26,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (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 71 [2022-11-19 06:44:26,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:26,953 INFO L225 Difference]: With dead ends: 5924 [2022-11-19 06:44:26,953 INFO L226 Difference]: Without dead ends: 5922 [2022-11-19 06:44:26,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:44:26,958 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 4236 mSDsluCounter, 14563 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 19964 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:26,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4245 Valid, 19964 Invalid, 1991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1986 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2022-11-19 06:44:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2022-11-19 06:44:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5914. [2022-11-19 06:44:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5914 states, 3447 states have (on average 1.2326660864519872) internal successors, (4249), 3545 states have internal predecessors, (4249), 2141 states have call successors, (2141), 324 states have call predecessors, (2141), 322 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2022-11-19 06:44:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5914 states to 5914 states and 8525 transitions. [2022-11-19 06:44:27,512 INFO L78 Accepts]: Start accepts. Automaton has 5914 states and 8525 transitions. Word has length 71 [2022-11-19 06:44:27,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:27,513 INFO L495 AbstractCegarLoop]: Abstraction has 5914 states and 8525 transitions. [2022-11-19 06:44:27,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:44:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5914 states and 8525 transitions. [2022-11-19 06:44:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 06:44:27,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:27,516 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:27,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:44:27,516 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:44:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:27,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1913539004, now seen corresponding path program 1 times [2022-11-19 06:44:27,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:27,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594067020] [2022-11-19 06:44:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:27,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-19 06:44:27,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:27,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594067020] [2022-11-19 06:44:27,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594067020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:44:27,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:44:27,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:44:27,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848535170] [2022-11-19 06:44:27,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:44:27,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:44:27,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:27,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:44:27,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:44:27,855 INFO L87 Difference]: Start difference. First operand 5914 states and 8525 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:44:30,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:31,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:35,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:39,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:39,908 INFO L93 Difference]: Finished difference Result 5928 states and 8534 transitions. [2022-11-19 06:44:39,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:44:39,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-19 06:44:39,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:39,934 INFO L225 Difference]: With dead ends: 5928 [2022-11-19 06:44:39,935 INFO L226 Difference]: Without dead ends: 5926 [2022-11-19 06:44:39,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:44:39,940 INFO L413 NwaCegarLoop]: 5417 mSDtfsCounter, 4240 mSDsluCounter, 14595 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 20012 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:39,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4248 Valid, 20012 Invalid, 1991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1988 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-11-19 06:44:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5926 states. [2022-11-19 06:44:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5926 to 5918. [2022-11-19 06:44:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5918 states, 3450 states have (on average 1.232463768115942) internal successors, (4252), 3548 states have internal predecessors, (4252), 2141 states have call successors, (2141), 325 states have call predecessors, (2141), 323 states have return successors, (2135), 2117 states have call predecessors, (2135), 2135 states have call successors, (2135) [2022-11-19 06:44:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5918 states to 5918 states and 8528 transitions. [2022-11-19 06:44:40,518 INFO L78 Accepts]: Start accepts. Automaton has 5918 states and 8528 transitions. Word has length 70 [2022-11-19 06:44:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:40,518 INFO L495 AbstractCegarLoop]: Abstraction has 5918 states and 8528 transitions. [2022-11-19 06:44:40,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:44:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5918 states and 8528 transitions. [2022-11-19 06:44:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 06:44:40,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:40,521 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:40,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:44:40,521 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:44:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1530096472, now seen corresponding path program 1 times [2022-11-19 06:44:40,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:40,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176611968] [2022-11-19 06:44:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:40,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-19 06:44:40,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:40,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176611968] [2022-11-19 06:44:40,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176611968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:44:40,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:44:40,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:44:40,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823496824] [2022-11-19 06:44:40,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:44:40,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:44:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:44:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:44:40,850 INFO L87 Difference]: Start difference. First operand 5918 states and 8528 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:44:44,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:49,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:50,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:44:50,529 INFO L93 Difference]: Finished difference Result 11468 states and 16594 transitions. [2022-11-19 06:44:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:44:50,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2022-11-19 06:44:50,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:44:50,594 INFO L225 Difference]: With dead ends: 11468 [2022-11-19 06:44:50,595 INFO L226 Difference]: Without dead ends: 11466 [2022-11-19 06:44:50,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:44:50,604 INFO L413 NwaCegarLoop]: 5781 mSDtfsCounter, 4185 mSDsluCounter, 15170 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 20951 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:44:50,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4192 Valid, 20951 Invalid, 2238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2233 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-19 06:44:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11466 states. [2022-11-19 06:44:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11466 to 11452. [2022-11-19 06:44:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11452 states, 6697 states have (on average 1.2341346871733612) internal successors, (8265), 6901 states have internal predecessors, (8265), 4123 states have call successors, (4123), 638 states have call predecessors, (4123), 628 states have return successors, (4193), 4055 states have call predecessors, (4193), 4111 states have call successors, (4193) [2022-11-19 06:44:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11452 states to 11452 states and 16581 transitions. [2022-11-19 06:44:51,724 INFO L78 Accepts]: Start accepts. Automaton has 11452 states and 16581 transitions. Word has length 75 [2022-11-19 06:44:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:44:51,725 INFO L495 AbstractCegarLoop]: Abstraction has 11452 states and 16581 transitions. [2022-11-19 06:44:51,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:44:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11452 states and 16581 transitions. [2022-11-19 06:44:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 06:44:51,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:44:51,733 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:44:51,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:44:51,733 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:44:51,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:44:51,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1376200060, now seen corresponding path program 1 times [2022-11-19 06:44:51,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:44:51,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360129321] [2022-11-19 06:44:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:44:51,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:44:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-19 06:44:52,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:52,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360129321] [2022-11-19 06:44:52,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360129321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:44:52,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:44:52,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:44:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375208768] [2022-11-19 06:44:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:44:52,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:44:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:44:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:44:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:44:52,055 INFO L87 Difference]: Start difference. First operand 11452 states and 16581 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:44:54,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:44:59,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:03,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:03,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:03,802 INFO L93 Difference]: Finished difference Result 11470 states and 16594 transitions. [2022-11-19 06:45:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:45:03,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2022-11-19 06:45:03,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:03,856 INFO L225 Difference]: With dead ends: 11470 [2022-11-19 06:45:03,857 INFO L226 Difference]: Without dead ends: 11468 [2022-11-19 06:45:03,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:45:03,865 INFO L413 NwaCegarLoop]: 5399 mSDtfsCounter, 4240 mSDsluCounter, 14559 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4246 SdHoareTripleChecker+Valid, 19958 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:03,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4246 Valid, 19958 Invalid, 1988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1985 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-19 06:45:03,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11468 states. [2022-11-19 06:45:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11468 to 11460. [2022-11-19 06:45:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11460 states, 6703 states have (on average 1.2339251081605251) internal successors, (8271), 6907 states have internal predecessors, (8271), 4123 states have call successors, (4123), 640 states have call predecessors, (4123), 630 states have return successors, (4193), 4055 states have call predecessors, (4193), 4111 states have call successors, (4193) [2022-11-19 06:45:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11460 states to 11460 states and 16587 transitions. [2022-11-19 06:45:04,837 INFO L78 Accepts]: Start accepts. Automaton has 11460 states and 16587 transitions. Word has length 80 [2022-11-19 06:45:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:04,838 INFO L495 AbstractCegarLoop]: Abstraction has 11460 states and 16587 transitions. [2022-11-19 06:45:04,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:45:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 11460 states and 16587 transitions. [2022-11-19 06:45:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 06:45:04,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:04,840 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 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] [2022-11-19 06:45:04,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 06:45:04,841 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:45:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:04,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2140670083, now seen corresponding path program 1 times [2022-11-19 06:45:04,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:45:04,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142325704] [2022-11-19 06:45:04,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:04,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:45:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-19 06:45:05,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:45:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142325704] [2022-11-19 06:45:05,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142325704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:05,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:05,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:45:05,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436263835] [2022-11-19 06:45:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:05,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:45:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:45:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:45:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:05,429 INFO L87 Difference]: Start difference. First operand 11460 states and 16587 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:45:08,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:10,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:12,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:16,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:19,243 INFO L93 Difference]: Finished difference Result 14363 states and 20790 transitions. [2022-11-19 06:45:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:45:19,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 103 [2022-11-19 06:45:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:19,297 INFO L225 Difference]: With dead ends: 14363 [2022-11-19 06:45:19,298 INFO L226 Difference]: Without dead ends: 14361 [2022-11-19 06:45:19,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:45:19,307 INFO L413 NwaCegarLoop]: 5431 mSDtfsCounter, 4204 mSDsluCounter, 14491 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4205 SdHoareTripleChecker+Valid, 19922 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:19,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4205 Valid, 19922 Invalid, 1977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1973 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2022-11-19 06:45:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14361 states. [2022-11-19 06:45:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14361 to 14326. [2022-11-19 06:45:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14326 states, 8393 states have (on average 1.234123674490647) internal successors, (10358), 8650 states have internal predecessors, (10358), 5135 states have call successors, (5135), 807 states have call predecessors, (5135), 794 states have return successors, (5246), 5047 states have call predecessors, (5246), 5123 states have call successors, (5246) [2022-11-19 06:45:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14326 states to 14326 states and 20739 transitions. [2022-11-19 06:45:20,463 INFO L78 Accepts]: Start accepts. Automaton has 14326 states and 20739 transitions. Word has length 103 [2022-11-19 06:45:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:20,463 INFO L495 AbstractCegarLoop]: Abstraction has 14326 states and 20739 transitions. [2022-11-19 06:45:20,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 06:45:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 14326 states and 20739 transitions. [2022-11-19 06:45:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 06:45:20,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:20,466 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 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] [2022-11-19 06:45:20,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 06:45:20,466 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:45:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:20,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1750095042, now seen corresponding path program 1 times [2022-11-19 06:45:20,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:45:20,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190292689] [2022-11-19 06:45:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:20,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:45:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-19 06:45:20,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:45:20,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190292689] [2022-11-19 06:45:20,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190292689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:20,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:20,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:45:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214971972] [2022-11-19 06:45:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:20,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:45:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:45:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:45:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:20,816 INFO L87 Difference]: Start difference. First operand 14326 states and 20739 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:45:24,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:29,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:30,888 INFO L93 Difference]: Finished difference Result 17418 states and 25151 transitions. [2022-11-19 06:45:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:45:30,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (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 [2022-11-19 06:45:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:30,949 INFO L225 Difference]: With dead ends: 17418 [2022-11-19 06:45:30,949 INFO L226 Difference]: Without dead ends: 17416 [2022-11-19 06:45:30,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:45:30,961 INFO L413 NwaCegarLoop]: 5765 mSDtfsCounter, 4211 mSDsluCounter, 15291 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 21056 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:30,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4216 Valid, 21056 Invalid, 2243 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2239 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-19 06:45:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17416 states. [2022-11-19 06:45:32,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17416 to 17408. [2022-11-19 06:45:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17408 states, 10201 states have (on average 1.2334084893637878) internal successors, (12582), 10507 states have internal predecessors, (12582), 6227 states have call successors, (6227), 990 states have call predecessors, (6227), 976 states have return successors, (6335), 6126 states have call predecessors, (6335), 6212 states have call successors, (6335) [2022-11-19 06:45:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17408 states to 17408 states and 25144 transitions. [2022-11-19 06:45:32,479 INFO L78 Accepts]: Start accepts. Automaton has 17408 states and 25144 transitions. Word has length 91 [2022-11-19 06:45:32,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:32,480 INFO L495 AbstractCegarLoop]: Abstraction has 17408 states and 25144 transitions. [2022-11-19 06:45:32,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:45:32,480 INFO L276 IsEmpty]: Start isEmpty. Operand 17408 states and 25144 transitions. [2022-11-19 06:45:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 06:45:32,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:32,483 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:32,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 06:45:32,483 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:45:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash 906059460, now seen corresponding path program 1 times [2022-11-19 06:45:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:45:32,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163243703] [2022-11-19 06:45:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:45:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-19 06:45:32,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:45:32,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163243703] [2022-11-19 06:45:32,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163243703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:32,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:32,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:45:32,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173472688] [2022-11-19 06:45:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:32,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:45:32,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:45:32,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:45:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:32,810 INFO L87 Difference]: Start difference. First operand 17408 states and 25144 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:45:37,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:41,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:44,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:45,600 INFO L93 Difference]: Finished difference Result 17428 states and 25160 transitions. [2022-11-19 06:45:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:45:45,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 90 [2022-11-19 06:45:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:45,663 INFO L225 Difference]: With dead ends: 17428 [2022-11-19 06:45:45,664 INFO L226 Difference]: Without dead ends: 17426 [2022-11-19 06:45:45,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:45:45,678 INFO L413 NwaCegarLoop]: 5408 mSDtfsCounter, 4238 mSDsluCounter, 14577 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4242 SdHoareTripleChecker+Valid, 19985 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:45,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4242 Valid, 19985 Invalid, 1988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1984 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2022-11-19 06:45:45,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17426 states. [2022-11-19 06:45:47,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17426 to 17420. [2022-11-19 06:45:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17420 states, 10210 states have (on average 1.2332027424094025) internal successors, (12591), 10516 states have internal predecessors, (12591), 6227 states have call successors, (6227), 993 states have call predecessors, (6227), 979 states have return successors, (6335), 6126 states have call predecessors, (6335), 6212 states have call successors, (6335) [2022-11-19 06:45:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17420 states to 17420 states and 25153 transitions. [2022-11-19 06:45:47,145 INFO L78 Accepts]: Start accepts. Automaton has 17420 states and 25153 transitions. Word has length 90 [2022-11-19 06:45:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:47,145 INFO L495 AbstractCegarLoop]: Abstraction has 17420 states and 25153 transitions. [2022-11-19 06:45:47,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 06:45:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 17420 states and 25153 transitions. [2022-11-19 06:45:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 06:45:47,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:47,148 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 06:45:47,148 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:45:47,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1298430850, now seen corresponding path program 1 times [2022-11-19 06:45:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:45:47,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139185431] [2022-11-19 06:45:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:47,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:45:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-19 06:45:47,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:45:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139185431] [2022-11-19 06:45:47,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139185431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:47,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:47,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:45:47,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055969409] [2022-11-19 06:45:47,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:47,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:45:47,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:45:47,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:45:47,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:47,487 INFO L87 Difference]: Start difference. First operand 17420 states and 25153 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:45:50,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:51,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:52,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:55,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:59,079 INFO L93 Difference]: Finished difference Result 17440 states and 25169 transitions. [2022-11-19 06:45:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:45:59,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2022-11-19 06:45:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:59,132 INFO L225 Difference]: With dead ends: 17440 [2022-11-19 06:45:59,132 INFO L226 Difference]: Without dead ends: 17438 [2022-11-19 06:45:59,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:45:59,144 INFO L413 NwaCegarLoop]: 5408 mSDtfsCounter, 4234 mSDsluCounter, 14577 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 19985 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:59,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4237 Valid, 19985 Invalid, 1988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1985 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-19 06:45:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17438 states. [2022-11-19 06:46:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17438 to 17432. [2022-11-19 06:46:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17432 states, 10219 states have (on average 1.2329973578628046) internal successors, (12600), 10525 states have internal predecessors, (12600), 6227 states have call successors, (6227), 996 states have call predecessors, (6227), 982 states have return successors, (6335), 6126 states have call predecessors, (6335), 6212 states have call successors, (6335) [2022-11-19 06:46:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17432 states to 17432 states and 25162 transitions. [2022-11-19 06:46:00,764 INFO L78 Accepts]: Start accepts. Automaton has 17432 states and 25162 transitions. Word has length 101 [2022-11-19 06:46:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:00,765 INFO L495 AbstractCegarLoop]: Abstraction has 17432 states and 25162 transitions. [2022-11-19 06:46:00,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:46:00,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17432 states and 25162 transitions. [2022-11-19 06:46:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 06:46:00,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:00,767 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:00,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 06:46:00,767 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:46:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1680653564, now seen corresponding path program 1 times [2022-11-19 06:46:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:00,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344184207] [2022-11-19 06:46:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:00,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-19 06:46:01,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:01,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344184207] [2022-11-19 06:46:01,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344184207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:01,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:01,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:46:01,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120014784] [2022-11-19 06:46:01,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:01,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:46:01,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:01,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:46:01,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:46:01,094 INFO L87 Difference]: Start difference. First operand 17432 states and 25162 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:46:04,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:09,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:11,238 INFO L93 Difference]: Finished difference Result 17446 states and 25172 transitions. [2022-11-19 06:46:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:46:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-11-19 06:46:11,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:11,286 INFO L225 Difference]: With dead ends: 17446 [2022-11-19 06:46:11,286 INFO L226 Difference]: Without dead ends: 17444 [2022-11-19 06:46:11,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:46:11,295 INFO L413 NwaCegarLoop]: 5765 mSDtfsCounter, 4215 mSDsluCounter, 15291 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 21056 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:11,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4217 Valid, 21056 Invalid, 2243 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2239 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-11-19 06:46:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17444 states. [2022-11-19 06:46:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17444 to 17436. [2022-11-19 06:46:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17436 states, 10222 states have (on average 1.2329289767168852) internal successors, (12603), 10528 states have internal predecessors, (12603), 6227 states have call successors, (6227), 997 states have call predecessors, (6227), 983 states have return successors, (6335), 6126 states have call predecessors, (6335), 6212 states have call successors, (6335) [2022-11-19 06:46:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17436 states to 17436 states and 25165 transitions. [2022-11-19 06:46:12,441 INFO L78 Accepts]: Start accepts. Automaton has 17436 states and 25165 transitions. Word has length 100 [2022-11-19 06:46:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:12,442 INFO L495 AbstractCegarLoop]: Abstraction has 17436 states and 25165 transitions. [2022-11-19 06:46:12,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 06:46:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 17436 states and 25165 transitions. [2022-11-19 06:46:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-19 06:46:12,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:12,444 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 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] [2022-11-19 06:46:12,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 06:46:12,445 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:46:12,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:12,445 INFO L85 PathProgramCache]: Analyzing trace with hash 12215576, now seen corresponding path program 1 times [2022-11-19 06:46:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:12,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778481036] [2022-11-19 06:46:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-11-19 06:46:12,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:12,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778481036] [2022-11-19 06:46:12,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778481036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:12,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:12,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:46:12,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658393283] [2022-11-19 06:46:12,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:12,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:46:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:46:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:46:12,959 INFO L87 Difference]: Start difference. First operand 17436 states and 25165 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:46:15,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:16,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:21,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:24,863 INFO L93 Difference]: Finished difference Result 17456 states and 25181 transitions. [2022-11-19 06:46:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:46:24,863 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 105 [2022-11-19 06:46:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:24,908 INFO L225 Difference]: With dead ends: 17456 [2022-11-19 06:46:24,908 INFO L226 Difference]: Without dead ends: 17452 [2022-11-19 06:46:24,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:46:24,918 INFO L413 NwaCegarLoop]: 5408 mSDtfsCounter, 4238 mSDsluCounter, 14577 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 19985 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:24,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4239 Valid, 19985 Invalid, 1988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1985 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-19 06:46:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17452 states. [2022-11-19 06:46:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17452 to 17446. [2022-11-19 06:46:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17446 states, 10230 states have (on average 1.2326490713587488) internal successors, (12610), 10535 states have internal predecessors, (12610), 6227 states have call successors, (6227), 1000 states have call predecessors, (6227), 985 states have return successors, (6335), 6126 states have call predecessors, (6335), 6212 states have call successors, (6335) [2022-11-19 06:46:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17446 states to 17446 states and 25172 transitions. [2022-11-19 06:46:26,047 INFO L78 Accepts]: Start accepts. Automaton has 17446 states and 25172 transitions. Word has length 105 [2022-11-19 06:46:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:26,048 INFO L495 AbstractCegarLoop]: Abstraction has 17446 states and 25172 transitions. [2022-11-19 06:46:26,048 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 06:46:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 17446 states and 25172 transitions. [2022-11-19 06:46:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-19 06:46:26,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:26,050 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 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] [2022-11-19 06:46:26,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 06:46:26,051 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:46:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:26,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1104563110, now seen corresponding path program 1 times [2022-11-19 06:46:26,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:26,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349105583] [2022-11-19 06:46:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:26,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-11-19 06:46:26,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349105583] [2022-11-19 06:46:26,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349105583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:26,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:26,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:46:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620235283] [2022-11-19 06:46:26,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:46:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:46:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:46:26,397 INFO L87 Difference]: Start difference. First operand 17446 states and 25172 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 06:46:29,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:34,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:38,359 INFO L93 Difference]: Finished difference Result 33620 states and 48441 transitions. [2022-11-19 06:46:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:46:38,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 116 [2022-11-19 06:46:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:38,469 INFO L225 Difference]: With dead ends: 33620 [2022-11-19 06:46:38,469 INFO L226 Difference]: Without dead ends: 33503 [2022-11-19 06:46:38,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:46:38,485 INFO L413 NwaCegarLoop]: 5141 mSDtfsCounter, 3937 mSDsluCounter, 14029 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3937 SdHoareTripleChecker+Valid, 19170 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:38,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3937 Valid, 19170 Invalid, 1898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1894 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-11-19 06:46:38,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33503 states. [2022-11-19 06:46:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33503 to 33489. [2022-11-19 06:46:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33489 states, 19641 states have (on average 1.2329820273916807) internal successors, (24217), 20229 states have internal predecessors, (24217), 11935 states have call successors, (11935), 1937 states have call predecessors, (11935), 1909 states have return successors, (12153), 11735 states have call predecessors, (12153), 11907 states have call successors, (12153) [2022-11-19 06:46:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33489 states to 33489 states and 48305 transitions. [2022-11-19 06:46:41,242 INFO L78 Accepts]: Start accepts. Automaton has 33489 states and 48305 transitions. Word has length 116 [2022-11-19 06:46:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:41,244 INFO L495 AbstractCegarLoop]: Abstraction has 33489 states and 48305 transitions. [2022-11-19 06:46:41,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 06:46:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 33489 states and 48305 transitions. [2022-11-19 06:46:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 06:46:41,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:41,251 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:41,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 06:46:41,251 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:46:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1831981396, now seen corresponding path program 1 times [2022-11-19 06:46:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:41,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632397526] [2022-11-19 06:46:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 06:46:41,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:41,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632397526] [2022-11-19 06:46:41,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632397526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:41,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:41,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:46:41,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864961133] [2022-11-19 06:46:41,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:41,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:46:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:46:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:46:41,766 INFO L87 Difference]: Start difference. First operand 33489 states and 48305 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-19 06:46:44,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:46,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:49,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:51,416 INFO L93 Difference]: Finished difference Result 67202 states and 98765 transitions. [2022-11-19 06:46:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:46:51,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2022-11-19 06:46:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:51,569 INFO L225 Difference]: With dead ends: 67202 [2022-11-19 06:46:51,569 INFO L226 Difference]: Without dead ends: 33729 [2022-11-19 06:46:51,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:46:51,749 INFO L413 NwaCegarLoop]: 3812 mSDtfsCounter, 10 mSDsluCounter, 3805 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7617 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:51,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 7617 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-19 06:46:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33729 states. [2022-11-19 06:46:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33729 to 33505. [2022-11-19 06:46:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33505 states, 19657 states have (on average 1.2327923894795747) internal successors, (24233), 20245 states have internal predecessors, (24233), 11935 states have call successors, (11935), 1937 states have call predecessors, (11935), 1909 states have return successors, (12153), 11735 states have call predecessors, (12153), 11907 states have call successors, (12153) [2022-11-19 06:46:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33505 states to 33505 states and 48321 transitions. [2022-11-19 06:46:54,781 INFO L78 Accepts]: Start accepts. Automaton has 33505 states and 48321 transitions. Word has length 161 [2022-11-19 06:46:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:54,781 INFO L495 AbstractCegarLoop]: Abstraction has 33505 states and 48321 transitions. [2022-11-19 06:46:54,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-19 06:46:54,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33505 states and 48321 transitions. [2022-11-19 06:46:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-19 06:46:54,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:54,787 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:54,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 06:46:54,788 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:46:54,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash -789535289, now seen corresponding path program 1 times [2022-11-19 06:46:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:46:54,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24267769] [2022-11-19 06:46:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:54,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:46:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 06:46:55,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:46:55,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24267769] [2022-11-19 06:46:55,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24267769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:55,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:55,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:46:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013092102] [2022-11-19 06:46:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:55,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:46:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:46:55,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:46:55,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:46:55,709 INFO L87 Difference]: Start difference. First operand 33505 states and 48321 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 06:47:04,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:06,474 INFO L93 Difference]: Finished difference Result 33759 states and 48642 transitions. [2022-11-19 06:47:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:47:06,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 171 [2022-11-19 06:47:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:06,652 INFO L225 Difference]: With dead ends: 33759 [2022-11-19 06:47:06,653 INFO L226 Difference]: Without dead ends: 33547 [2022-11-19 06:47:06,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:47:06,669 INFO L413 NwaCegarLoop]: 3873 mSDtfsCounter, 230 mSDsluCounter, 11487 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 15360 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:06,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 15360 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1868 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-19 06:47:06,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33547 states. [2022-11-19 06:47:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33547 to 33547. [2022-11-19 06:47:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33547 states, 19685 states have (on average 1.2316484632969267) internal successors, (24245), 20263 states have internal predecessors, (24245), 11921 states have call successors, (11921), 1965 states have call predecessors, (11921), 1937 states have return successors, (12140), 11727 states have call predecessors, (12140), 11894 states have call successors, (12140) [2022-11-19 06:47:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33547 states to 33547 states and 48306 transitions. [2022-11-19 06:47:09,505 INFO L78 Accepts]: Start accepts. Automaton has 33547 states and 48306 transitions. Word has length 171 [2022-11-19 06:47:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:09,505 INFO L495 AbstractCegarLoop]: Abstraction has 33547 states and 48306 transitions. [2022-11-19 06:47:09,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 06:47:09,505 INFO L276 IsEmpty]: Start isEmpty. Operand 33547 states and 48306 transitions. [2022-11-19 06:47:09,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-19 06:47:09,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:09,516 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 9, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-19 06:47:09,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 06:47:09,517 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:47:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:09,517 INFO L85 PathProgramCache]: Analyzing trace with hash 487969876, now seen corresponding path program 1 times [2022-11-19 06:47:09,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:09,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879763654] [2022-11-19 06:47:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:09,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2022-11-19 06:47:10,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:10,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879763654] [2022-11-19 06:47:10,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879763654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:47:10,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:47:10,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:47:10,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399632677] [2022-11-19 06:47:10,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:47:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:47:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:47:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:47:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:47:10,140 INFO L87 Difference]: Start difference. First operand 33547 states and 48306 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-19 06:47:13,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:17,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:19,698 INFO L93 Difference]: Finished difference Result 70778 states and 103354 transitions. [2022-11-19 06:47:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:47:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 290 [2022-11-19 06:47:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:19,881 INFO L225 Difference]: With dead ends: 70778 [2022-11-19 06:47:19,881 INFO L226 Difference]: Without dead ends: 42935 [2022-11-19 06:47:19,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:47:19,991 INFO L413 NwaCegarLoop]: 5165 mSDtfsCounter, 866 mSDsluCounter, 4149 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 9314 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:19,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 9314 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-11-19 06:47:20,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42935 states. [2022-11-19 06:47:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42935 to 33547. [2022-11-19 06:47:23,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33547 states, 19685 states have (on average 1.2313436626873253) internal successors, (24239), 20263 states have internal predecessors, (24239), 11921 states have call successors, (11921), 1965 states have call predecessors, (11921), 1937 states have return successors, (12140), 11727 states have call predecessors, (12140), 11894 states have call successors, (12140) [2022-11-19 06:47:23,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33547 states to 33547 states and 48300 transitions. [2022-11-19 06:47:23,857 INFO L78 Accepts]: Start accepts. Automaton has 33547 states and 48300 transitions. Word has length 290 [2022-11-19 06:47:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:23,858 INFO L495 AbstractCegarLoop]: Abstraction has 33547 states and 48300 transitions. [2022-11-19 06:47:23,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-19 06:47:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 33547 states and 48300 transitions. [2022-11-19 06:47:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-19 06:47:23,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:23,870 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:23,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-19 06:47:23,870 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:47:23,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:23,871 INFO L85 PathProgramCache]: Analyzing trace with hash -557838525, now seen corresponding path program 1 times [2022-11-19 06:47:23,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:23,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278414713] [2022-11-19 06:47:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:47:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-11-19 06:47:24,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:47:24,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278414713] [2022-11-19 06:47:24,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278414713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:47:24,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:47:24,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:47:24,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36745595] [2022-11-19 06:47:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:47:24,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:47:24,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:47:24,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:47:24,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:47:24,777 INFO L87 Difference]: Start difference. First operand 33547 states and 48300 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 06:47:27,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:32,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:47:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:47:37,232 INFO L93 Difference]: Finished difference Result 83832 states and 123302 transitions. [2022-11-19 06:47:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:47:37,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 309 [2022-11-19 06:47:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:47:37,597 INFO L225 Difference]: With dead ends: 83832 [2022-11-19 06:47:37,597 INFO L226 Difference]: Without dead ends: 50299 [2022-11-19 06:47:37,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:47:37,734 INFO L413 NwaCegarLoop]: 5356 mSDtfsCounter, 2494 mSDsluCounter, 9015 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 839 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3017 SdHoareTripleChecker+Valid, 14371 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 839 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:47:37,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3017 Valid, 14371 Invalid, 2486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [839 Valid, 1646 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 06:47:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50299 states. [2022-11-19 06:47:41,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50299 to 33559. [2022-11-19 06:47:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33559 states, 19697 states have (on average 1.2305934913946286) internal successors, (24239), 20275 states have internal predecessors, (24239), 11921 states have call successors, (11921), 1965 states have call predecessors, (11921), 1937 states have return successors, (12140), 11727 states have call predecessors, (12140), 11894 states have call successors, (12140) [2022-11-19 06:47:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33559 states to 33559 states and 48300 transitions. [2022-11-19 06:47:42,144 INFO L78 Accepts]: Start accepts. Automaton has 33559 states and 48300 transitions. Word has length 309 [2022-11-19 06:47:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:47:42,144 INFO L495 AbstractCegarLoop]: Abstraction has 33559 states and 48300 transitions. [2022-11-19 06:47:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-19 06:47:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 33559 states and 48300 transitions. [2022-11-19 06:47:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2022-11-19 06:47:42,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:47:42,159 INFO L195 NwaCegarLoop]: trace histogram [26, 23, 20, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:47:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 06:47:42,159 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 06:47:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:47:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1671752250, now seen corresponding path program 1 times [2022-11-19 06:47:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:47:42,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921689403] [2022-11-19 06:47:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:47:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:47:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat