./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P --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 fb901e431a7ee0706f0e51d89ec94e4336f8310f955de577abd9c91b26865dbf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:37:46,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:37:46,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:37:46,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:37:46,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:37:46,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:37:46,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:37:46,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:37:46,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:37:46,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:37:46,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:37:46,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:37:46,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:37:46,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:37:46,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:37:46,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:37:46,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:37:46,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:37:46,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:37:46,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:37:46,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:37:46,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:37:46,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:37:46,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:37:46,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:37:46,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:37:46,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:37:46,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:37:46,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:37:46,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:37:46,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:37:46,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:37:46,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:37:46,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:37:46,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:37:46,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:37:46,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:37:46,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:37:46,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:37:46,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:37:46,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:37:46,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:37:46,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:37:46,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:37:46,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:37:46,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:37:46,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:37:46,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:37:46,289 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:37:46,289 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:37:46,289 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:37:46,290 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:37:46,291 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:37:46,291 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:37:46,292 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:37:46,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:37:46,292 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:37:46,292 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:37:46,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:37:46,293 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:37:46,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:37:46,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:37:46,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:37:46,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:37:46,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:37:46,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:37:46,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:37:46,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:37:46,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:37:46,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:37:46,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:37:46,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:46,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:37:46,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:37:46,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:37:46,299 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:37:46,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:37:46,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:37:46,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:37:46,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:37:46,301 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb901e431a7ee0706f0e51d89ec94e4336f8310f955de577abd9c91b26865dbf [2021-11-21 01:37:46,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:37:46,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:37:46,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:37:46,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:37:46,726 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:37:46,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i [2021-11-21 01:37:46,810 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/data/cb0523b67/c96afe2aa1794bf889ce37224b7ebe03/FLAGb3ac46801 [2021-11-21 01:37:48,167 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:37:48,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i [2021-11-21 01:37:48,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/data/cb0523b67/c96afe2aa1794bf889ce37224b7ebe03/FLAGb3ac46801 [2021-11-21 01:37:48,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/data/cb0523b67/c96afe2aa1794bf889ce37224b7ebe03 [2021-11-21 01:37:48,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:37:48,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:37:48,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:48,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:37:48,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:37:48,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:48" (1/1) ... [2021-11-21 01:37:48,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da7e3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:48, skipping insertion in model container [2021-11-21 01:37:48,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:48" (1/1) ... [2021-11-21 01:37:48,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:37:49,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:37:56,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620437,620450] [2021-11-21 01:37:56,839 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620606,620619] [2021-11-21 01:37:56,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620773,620786] [2021-11-21 01:37:56,841 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620941,620954] [2021-11-21 01:37:56,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:56,974 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:37:57,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620437,620450] [2021-11-21 01:37:57,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620606,620619] [2021-11-21 01:37:57,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620773,620786] [2021-11-21 01:37:57,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i[620941,620954] [2021-11-21 01:37:57,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:58,411 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:37:58,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58 WrapperNode [2021-11-21 01:37:58,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:58,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:58,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:37:58,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:37:58,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:37:58,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:37:59,261 INFO L137 Inliner]: procedures = 699, calls = 6873, calls flagged for inlining = 322, calls inlined = 303, statements flattened = 13603 [2021-11-21 01:37:59,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:59,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:37:59,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:37:59,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:37:59,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:37:59,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:37:59,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:37:59,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:37:59,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:37:59,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:37:59,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:38:00,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:38:00,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:38:00,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:38:00,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:38:00,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (1/1) ... [2021-11-21 01:38:00,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:38:00,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:00,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:38:00,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:38:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure PC4500_writerid [2021-11-21 01:38:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure PC4500_writerid [2021-11-21 01:38:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure reset_card [2021-11-21 01:38:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_card [2021-11-21 01:38:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-21 01:38:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure readStatusRid [2021-11-21 01:38:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure readStatusRid [2021-11-21 01:38:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-21 01:38:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure reset_airo_card [2021-11-21 01:38:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_airo_card [2021-11-21 01:38:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-21 01:38:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-21 01:38:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_cipher_crt [2021-11-21 01:38:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_cipher_crt [2021-11-21 01:38:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:38:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:38:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure wifi_setup [2021-11-21 01:38:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure wifi_setup [2021-11-21 01:38:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:38:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:38:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:38:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:38:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_spy_update [2021-11-21 01:38:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_spy_update [2021-11-21 01:38:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure age_mic_context [2021-11-21 01:38:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure age_mic_context [2021-11-21 01:38:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:38:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:38:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure setup_card [2021-11-21 01:38:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_card [2021-11-21 01:38:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure airo_networks_free [2021-11-21 01:38:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_networks_free [2021-11-21 01:38:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_should_stop [2021-11-21 01:38:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_should_stop [2021-11-21 01:38:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-21 01:38:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-21 01:38:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:38:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:38:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure airo_close [2021-11-21 01:38:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_close [2021-11-21 01:38:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_62 [2021-11-21 01:38:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_62 [2021-11-21 01:38:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure get_tx_error [2021-11-21 01:38:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure get_tx_error [2021-11-21 01:38:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure sniffing_mode [2021-11-21 01:38:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure sniffing_mode [2021-11-21 01:38:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:38:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:38:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure header_len [2021-11-21 01:38:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure header_len [2021-11-21 01:38:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2021-11-21 01:38:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2021-11-21 01:38:00,445 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2021-11-21 01:38:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2021-11-21 01:38:00,446 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-21 01:38:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-21 01:38:00,446 INFO L130 BoogieDeclarations]: Found specification of procedure readSsidRid [2021-11-21 01:38:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure readSsidRid [2021-11-21 01:38:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:38:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure emmh32_final [2021-11-21 01:38:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure emmh32_final [2021-11-21 01:38:00,448 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:38:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:38:00,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:38:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:38:00,448 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-11-21 01:38:00,449 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-11-21 01:38:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure down_trylock [2021-11-21 01:38:00,450 INFO L138 BoogieDeclarations]: Found implementation of procedure down_trylock [2021-11-21 01:38:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-21 01:38:00,450 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-21 01:38:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:38:00,451 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:38:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:38:00,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:38:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure enable_MAC [2021-11-21 01:38:00,452 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_MAC [2021-11-21 01:38:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure OUT4500 [2021-11-21 01:38:00,453 INFO L138 BoogieDeclarations]: Found implementation of procedure OUT4500 [2021-11-21 01:38:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:38:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:38:00,454 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:38:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure mpi_send_packet [2021-11-21 01:38:00,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mpi_send_packet [2021-11-21 01:38:00,455 INFO L130 BoogieDeclarations]: Found specification of procedure PDE_DATA [2021-11-21 01:38:00,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE_DATA [2021-11-21 01:38:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-21 01:38:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-21 01:38:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure airo_ioctl [2021-11-21 01:38:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_ioctl [2021-11-21 01:38:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 01:38:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 01:38:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:38:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:38:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:38:00,458 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:38:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure airo_end_xmit11 [2021-11-21 01:38:00,459 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_end_xmit11 [2021-11-21 01:38:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-21 01:38:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-21 01:38:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure airo_change_mtu [2021-11-21 01:38:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_change_mtu [2021-11-21 01:38:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:38:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:38:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:38:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure disable_interrupts [2021-11-21 01:38:00,465 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_interrupts [2021-11-21 01:38:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:38:00,467 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:38:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 01:38:00,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 01:38:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:38:00,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:38:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure down_interruptible [2021-11-21 01:38:00,469 INFO L138 BoogieDeclarations]: Found implementation of procedure down_interruptible [2021-11-21 01:38:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:38:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:38:00,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:38:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:38:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure airo_pci_remove [2021-11-21 01:38:00,477 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_pci_remove [2021-11-21 01:38:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure aux_setup [2021-11-21 01:38:00,477 INFO L138 BoogieDeclarations]: Found implementation of procedure aux_setup [2021-11-21 01:38:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure writeConfigRid [2021-11-21 01:38:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure writeConfigRid [2021-11-21 01:38:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:38:00,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:38:00,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:38:00,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:38:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure readCapabilityRid [2021-11-21 01:38:00,479 INFO L138 BoogieDeclarations]: Found implementation of procedure readCapabilityRid [2021-11-21 01:38:00,479 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-21 01:38:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-21 01:38:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-21 01:38:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-21 01:38:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:38:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:38:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_netdev_mqs [2021-11-21 01:38:00,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_netdev_mqs [2021-11-21 01:38:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 01:38:00,496 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 01:38:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:38:00,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:38:00,497 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:38:00,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:38:00,497 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 01:38:00,497 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 01:38:00,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:38:00,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:38:00,498 INFO L130 BoogieDeclarations]: Found specification of procedure writeWepKeyRid [2021-11-21 01:38:00,498 INFO L138 BoogieDeclarations]: Found implementation of procedure writeWepKeyRid [2021-11-21 01:38:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure proc_create_data [2021-11-21 01:38:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_create_data [2021-11-21 01:38:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:38:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-21 01:38:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-21 01:38:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure del_airo_dev [2021-11-21 01:38:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure del_airo_dev [2021-11-21 01:38:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:38:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:38:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:38:00,501 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:38:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:38:00,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:38:00,501 INFO L130 BoogieDeclarations]: Found specification of procedure writeSsidRid [2021-11-21 01:38:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure writeSsidRid [2021-11-21 01:38:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:38:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure MoveWindow [2021-11-21 01:38:00,502 INFO L138 BoogieDeclarations]: Found implementation of procedure MoveWindow [2021-11-21 01:38:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-21 01:38:00,502 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-21 01:38:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:38:00,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:38:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-21 01:38:00,503 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-21 01:38:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure crypto_cipher_tfm [2021-11-21 01:38:00,504 INFO L138 BoogieDeclarations]: Found implementation of procedure crypto_cipher_tfm [2021-11-21 01:38:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-21 01:38:00,504 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-21 01:38:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:38:00,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:38:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure proc_close [2021-11-21 01:38:00,506 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_close [2021-11-21 01:38:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:38:00,507 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:38:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure airo_set_multicast_list [2021-11-21 01:38:00,507 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_set_multicast_list [2021-11-21 01:38:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 01:38:00,508 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 01:38:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:38:00,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:38:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure set_wep_key [2021-11-21 01:38:00,509 INFO L138 BoogieDeclarations]: Found implementation of procedure set_wep_key [2021-11-21 01:38:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure writeAPListRid [2021-11-21 01:38:00,509 INFO L138 BoogieDeclarations]: Found implementation of procedure writeAPListRid [2021-11-21 01:38:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:38:00,509 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:38:00,510 INFO L130 BoogieDeclarations]: Found specification of procedure freezing [2021-11-21 01:38:00,510 INFO L138 BoogieDeclarations]: Found implementation of procedure freezing [2021-11-21 01:38:00,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:38:00,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:38:00,510 INFO L130 BoogieDeclarations]: Found specification of procedure proc_stats_rid_open [2021-11-21 01:38:00,511 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_stats_rid_open [2021-11-21 01:38:00,511 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:38:00,511 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:38:00,511 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-21 01:38:00,511 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-21 01:38:00,512 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 01:38:00,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 01:38:00,512 INFO L130 BoogieDeclarations]: Found specification of procedure insb [2021-11-21 01:38:00,512 INFO L138 BoogieDeclarations]: Found implementation of procedure insb [2021-11-21 01:38:00,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 01:38:00,513 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 01:38:00,513 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:38:00,513 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:38:00,513 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-21 01:38:00,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-21 01:38:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure IN4500 [2021-11-21 01:38:00,514 INFO L138 BoogieDeclarations]: Found implementation of procedure IN4500 [2021-11-21 01:38:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-21 01:38:00,514 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-21 01:38:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:38:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:38:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:38:00,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:38:00,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_aux_lock_of_airo_info [2021-11-21 01:38:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_aux_lock_of_airo_info [2021-11-21 01:38:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-21 01:38:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-21 01:38:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:38:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:38:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-21 01:38:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-21 01:38:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure bap_write [2021-11-21 01:38:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure bap_write [2021-11-21 01:38:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure _init_airo_card [2021-11-21 01:38:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure _init_airo_card [2021-11-21 01:38:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure waitbusy [2021-11-21 01:38:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure waitbusy [2021-11-21 01:38:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure decapsulate [2021-11-21 01:38:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure decapsulate [2021-11-21 01:38:00,540 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2021-11-21 01:38:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2021-11-21 01:38:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir_mode [2021-11-21 01:38:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir_mode [2021-11-21 01:38:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:38:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:38:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure readBSSListRid [2021-11-21 01:38:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure readBSSListRid [2021-11-21 01:38:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:38:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:38:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2021-11-21 01:38:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2021-11-21 01:38:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-21 01:38:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-21 01:38:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure set_wep_tx_idx [2021-11-21 01:38:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure set_wep_tx_idx [2021-11-21 01:38:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:38:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:38:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 01:38:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 01:38:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:38:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:38:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:38:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure proc_write [2021-11-21 01:38:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_write [2021-11-21 01:38:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-11-21 01:38:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-11-21 01:38:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:38:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-11-21 01:38:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-11-21 01:38:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_subtree [2021-11-21 01:38:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_subtree [2021-11-21 01:38:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_allocate [2021-11-21 01:38:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_allocate [2021-11-21 01:38:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 01:38:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 01:38:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure proc_read [2021-11-21 01:38:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_read [2021-11-21 01:38:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-21 01:38:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-21 01:38:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:38:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 01:38:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 01:38:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure PC4500_accessrid [2021-11-21 01:38:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure PC4500_accessrid [2021-11-21 01:38:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure airo_send_event [2021-11-21 01:38:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_send_event [2021-11-21 01:38:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 01:38:00,551 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 01:38:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:38:00,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:38:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure airo_pci_resume [2021-11-21 01:38:00,552 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_pci_resume [2021-11-21 01:38:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-21 01:38:00,552 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-21 01:38:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:38:00,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:38:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure hex_to_bin [2021-11-21 01:38:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure hex_to_bin [2021-11-21 01:38:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure try_auto_wep [2021-11-21 01:38:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure try_auto_wep [2021-11-21 01:38:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:38:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:38:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 01:38:00,554 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 01:38:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure bap_read [2021-11-21 01:38:00,554 INFO L138 BoogieDeclarations]: Found implementation of procedure bap_read [2021-11-21 01:38:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure issuecommand [2021-11-21 01:38:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure issuecommand [2021-11-21 01:38:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:38:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:38:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure bap_setup [2021-11-21 01:38:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure bap_setup [2021-11-21 01:38:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure readAPListRid [2021-11-21 01:38:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure readAPListRid [2021-11-21 01:38:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:38:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:38:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:38:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:38:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure airo_read_stats [2021-11-21 01:38:00,570 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_read_stats [2021-11-21 01:38:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure airo_end_xmit [2021-11-21 01:38:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_end_xmit [2021-11-21 01:38:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure readConfigRid [2021-11-21 01:38:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure readConfigRid [2021-11-21 01:38:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:38:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:38:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-21 01:38:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-21 01:38:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:38:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:38:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure ether_setup [2021-11-21 01:38:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_setup [2021-11-21 01:38:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure airo_open [2021-11-21 01:38:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_open [2021-11-21 01:38:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:38:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure stop_airo_card [2021-11-21 01:38:00,574 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_airo_card [2021-11-21 01:38:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure emmh32_update [2021-11-21 01:38:00,574 INFO L138 BoogieDeclarations]: Found implementation of procedure emmh32_update [2021-11-21 01:38:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-21 01:38:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-21 01:38:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-21 01:38:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-21 01:38:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:38:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:38:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure readWepKeyRid [2021-11-21 01:38:00,576 INFO L138 BoogieDeclarations]: Found implementation of procedure readWepKeyRid [2021-11-21 01:38:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-21 01:38:00,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-21 01:38:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure mpi_unmap_card [2021-11-21 01:38:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure mpi_unmap_card [2021-11-21 01:38:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 01:38:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 01:38:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-21 01:38:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-21 01:38:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure proc_set_user [2021-11-21 01:38:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_set_user [2021-11-21 01:38:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 01:38:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 01:38:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2021-11-21 01:38:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2021-11-21 01:38:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:38:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:38:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure airo_get_stats [2021-11-21 01:38:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_get_stats [2021-11-21 01:38:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure PC4500_readrid [2021-11-21 01:38:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure PC4500_readrid [2021-11-21 01:38:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:38:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:38:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure mpi_init_descriptors [2021-11-21 01:38:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure mpi_init_descriptors [2021-11-21 01:38:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure get_dec_u16 [2021-11-21 01:38:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dec_u16 [2021-11-21 01:38:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure enable_interrupts [2021-11-21 01:38:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_interrupts [2021-11-21 01:38:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-21 01:38:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-21 01:38:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure airo_read_wireless_stats [2021-11-21 01:38:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_read_wireless_stats [2021-11-21 01:38:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:38:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-21 01:38:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-21 01:38:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2021-11-21 01:38:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2021-11-21 01:38:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure airo_set_mac_address [2021-11-21 01:38:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_set_mac_address [2021-11-21 01:38:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:38:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:38:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure emmh32_init [2021-11-21 01:38:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure emmh32_init [2021-11-21 01:38:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 01:38:00,586 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 01:38:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure disable_MAC [2021-11-21 01:38:00,586 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_MAC [2021-11-21 01:38:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure readStatsRid [2021-11-21 01:38:00,586 INFO L138 BoogieDeclarations]: Found implementation of procedure readStatsRid [2021-11-21 01:38:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure encapsulate [2021-11-21 01:38:00,587 INFO L138 BoogieDeclarations]: Found implementation of procedure encapsulate [2021-11-21 01:38:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure airo_set_promisc [2021-11-21 01:38:00,587 INFO L138 BoogieDeclarations]: Found implementation of procedure airo_set_promisc [2021-11-21 01:38:02,586 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:38:02,592 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:38:02,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:38:59,365 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:39:02,543 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:39:02,543 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:39:02,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:39:02 BoogieIcfgContainer [2021-11-21 01:39:02,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:39:02,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:39:02,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:39:02,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:39:02,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:37:48" (1/3) ... [2021-11-21 01:39:02,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa72923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:39:02, skipping insertion in model container [2021-11-21 01:39:02,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:58" (2/3) ... [2021-11-21 01:39:02,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa72923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:39:02, skipping insertion in model container [2021-11-21 01:39:02,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:39:02" (3/3) ... [2021-11-21 01:39:02,562 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-airo.cil.i [2021-11-21 01:39:02,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:39:02,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:39:02,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:39:02,656 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:39:02,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:39:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 3600 states, 2087 states have (on average 1.3210349784379491) internal successors, (2757), 2254 states have internal predecessors, (2757), 1320 states have call successors, (1320), 191 states have call predecessors, (1320), 190 states have return successors, (1307), 1244 states have call predecessors, (1307), 1307 states have call successors, (1307) [2021-11-21 01:39:02,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 01:39:02,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:02,791 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 01:39:02,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:39:02,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash 15664805, now seen corresponding path program 1 times [2021-11-21 01:39:02,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:02,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036382964] [2021-11-21 01:39:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:02,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-21 01:39:04,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:04,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036382964] [2021-11-21 01:39:04,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036382964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:04,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:04,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:39:04,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469284289] [2021-11-21 01:39:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:04,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:39:04,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:39:04,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:39:04,319 INFO L87 Difference]: Start difference. First operand has 3600 states, 2087 states have (on average 1.3210349784379491) internal successors, (2757), 2254 states have internal predecessors, (2757), 1320 states have call successors, (1320), 191 states have call predecessors, (1320), 190 states have return successors, (1307), 1244 states have call predecessors, (1307), 1307 states have call successors, (1307) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:39:07,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:16,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:22,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:26,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:26,123 INFO L93 Difference]: Finished difference Result 8802 states and 13248 transitions. [2021-11-21 01:39:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:39:26,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 68 [2021-11-21 01:39:26,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:26,233 INFO L225 Difference]: With dead ends: 8802 [2021-11-21 01:39:26,233 INFO L226 Difference]: Without dead ends: 5211 [2021-11-21 01:39:26,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:39:26,301 INFO L933 BasicCegarLoop]: 6733 mSDtfsCounter, 4764 mSDsluCounter, 17733 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 22813 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:26,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4785 Valid, 22813 Invalid, 2359 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2354 Invalid, 3 Unknown, 0 Unchecked, 21.0s Time] [2021-11-21 01:39:26,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2021-11-21 01:39:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5202. [2021-11-21 01:39:26,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 3055 states have (on average 1.3171849427168576) internal successors, (4024), 3265 states have internal predecessors, (4024), 1824 states have call successors, (1824), 321 states have call predecessors, (1824), 320 states have return successors, (1825), 1753 states have call predecessors, (1825), 1821 states have call successors, (1825) [2021-11-21 01:39:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 7673 transitions. [2021-11-21 01:39:26,957 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 7673 transitions. Word has length 68 [2021-11-21 01:39:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:26,959 INFO L470 AbstractCegarLoop]: Abstraction has 5202 states and 7673 transitions. [2021-11-21 01:39:26,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 01:39:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 7673 transitions. [2021-11-21 01:39:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 01:39:26,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:26,965 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 01:39:26,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:39:26,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:39:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:26,967 INFO L85 PathProgramCache]: Analyzing trace with hash -839635276, now seen corresponding path program 1 times [2021-11-21 01:39:26,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:26,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091609989] [2021-11-21 01:39:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:26,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-21 01:39:27,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:27,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091609989] [2021-11-21 01:39:27,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091609989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:27,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:27,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:39:27,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580782586] [2021-11-21 01:39:27,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:27,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:39:27,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:39:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:39:27,626 INFO L87 Difference]: Start difference. First operand 5202 states and 7673 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:39:30,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:38,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:45,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:39:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:48,054 INFO L93 Difference]: Finished difference Result 5217 states and 7688 transitions. [2021-11-21 01:39:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:39:48,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 73 [2021-11-21 01:39:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:48,349 INFO L225 Difference]: With dead ends: 5217 [2021-11-21 01:39:48,349 INFO L226 Difference]: Without dead ends: 5215 [2021-11-21 01:39:48,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:39:48,355 INFO L933 BasicCegarLoop]: 6735 mSDtfsCounter, 4733 mSDsluCounter, 17734 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 22806 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:48,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4752 Valid, 22806 Invalid, 2373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2369 Invalid, 3 Unknown, 0 Unchecked, 19.9s Time] [2021-11-21 01:39:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5215 states. [2021-11-21 01:39:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5215 to 5206. [2021-11-21 01:39:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5206 states, 3058 states have (on average 1.316873773708306) internal successors, (4027), 3268 states have internal predecessors, (4027), 1824 states have call successors, (1824), 322 states have call predecessors, (1824), 321 states have return successors, (1825), 1753 states have call predecessors, (1825), 1821 states have call successors, (1825) [2021-11-21 01:39:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 7676 transitions. [2021-11-21 01:39:48,785 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 7676 transitions. Word has length 73 [2021-11-21 01:39:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:48,789 INFO L470 AbstractCegarLoop]: Abstraction has 5206 states and 7676 transitions. [2021-11-21 01:39:48,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:39:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 7676 transitions. [2021-11-21 01:39:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-21 01:39:48,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:48,802 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 01:39:48,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:39:48,804 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:39:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:48,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1214394427, now seen corresponding path program 1 times [2021-11-21 01:39:48,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:48,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216552997] [2021-11-21 01:39:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:48,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-21 01:39:49,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:49,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216552997] [2021-11-21 01:39:49,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216552997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:49,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:49,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:39:49,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989612502] [2021-11-21 01:39:49,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:49,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:39:49,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:39:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:39:49,424 INFO L87 Difference]: Start difference. First operand 5206 states and 7676 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:39:52,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:00,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:06,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:09,867 INFO L93 Difference]: Finished difference Result 5221 states and 7691 transitions. [2021-11-21 01:40:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:40:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 78 [2021-11-21 01:40:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:09,929 INFO L225 Difference]: With dead ends: 5221 [2021-11-21 01:40:09,929 INFO L226 Difference]: Without dead ends: 5219 [2021-11-21 01:40:09,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:40:09,936 INFO L933 BasicCegarLoop]: 6735 mSDtfsCounter, 4733 mSDsluCounter, 17734 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4751 SdHoareTripleChecker+Valid, 22806 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:09,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4751 Valid, 22806 Invalid, 2373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2369 Invalid, 3 Unknown, 0 Unchecked, 20.0s Time] [2021-11-21 01:40:09,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2021-11-21 01:40:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 5210. [2021-11-21 01:40:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5210 states, 3061 states have (on average 1.31656321463574) internal successors, (4030), 3271 states have internal predecessors, (4030), 1824 states have call successors, (1824), 323 states have call predecessors, (1824), 322 states have return successors, (1825), 1753 states have call predecessors, (1825), 1821 states have call successors, (1825) [2021-11-21 01:40:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 7679 transitions. [2021-11-21 01:40:10,313 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 7679 transitions. Word has length 78 [2021-11-21 01:40:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:10,314 INFO L470 AbstractCegarLoop]: Abstraction has 5210 states and 7679 transitions. [2021-11-21 01:40:10,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:40:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 7679 transitions. [2021-11-21 01:40:10,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-21 01:40:10,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:10,318 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:40:10,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:40:10,319 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:40:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:10,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1223706900, now seen corresponding path program 1 times [2021-11-21 01:40:10,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:10,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001706600] [2021-11-21 01:40:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:10,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-21 01:40:10,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:10,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001706600] [2021-11-21 01:40:10,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001706600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:10,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:10,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:40:10,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704217819] [2021-11-21 01:40:10,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:10,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:40:10,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:10,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:40:10,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:10,903 INFO L87 Difference]: Start difference. First operand 5210 states and 7679 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:40:13,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:21,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:24,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:30,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:33,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:33,514 INFO L93 Difference]: Finished difference Result 10066 states and 15006 transitions. [2021-11-21 01:40:33,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:40:33,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 83 [2021-11-21 01:40:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:33,629 INFO L225 Difference]: With dead ends: 10066 [2021-11-21 01:40:33,630 INFO L226 Difference]: Without dead ends: 10064 [2021-11-21 01:40:33,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:40:33,641 INFO L933 BasicCegarLoop]: 7668 mSDtfsCounter, 5188 mSDsluCounter, 22013 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 27746 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:33,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 27746 Invalid, 2682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2676 Invalid, 3 Unknown, 0 Unchecked, 22.0s Time] [2021-11-21 01:40:33,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2021-11-21 01:40:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 10048. [2021-11-21 01:40:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10048 states, 5918 states have (on average 1.319533626225076) internal successors, (7809), 6332 states have internal predecessors, (7809), 3511 states have call successors, (3511), 620 states have call predecessors, (3511), 616 states have return successors, (3670), 3360 states have call predecessors, (3670), 3505 states have call successors, (3670) [2021-11-21 01:40:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10048 states to 10048 states and 14990 transitions. [2021-11-21 01:40:34,388 INFO L78 Accepts]: Start accepts. Automaton has 10048 states and 14990 transitions. Word has length 83 [2021-11-21 01:40:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:34,389 INFO L470 AbstractCegarLoop]: Abstraction has 10048 states and 14990 transitions. [2021-11-21 01:40:34,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:40:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 10048 states and 14990 transitions. [2021-11-21 01:40:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-21 01:40:34,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:34,392 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 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] [2021-11-21 01:40:34,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:40:34,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:40:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1137876763, now seen corresponding path program 1 times [2021-11-21 01:40:34,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:34,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783945465] [2021-11-21 01:40:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:34,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-21 01:40:35,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:35,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783945465] [2021-11-21 01:40:35,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783945465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:35,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:35,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:40:35,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210183060] [2021-11-21 01:40:35,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:35,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:40:35,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:35,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:40:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:35,238 INFO L87 Difference]: Start difference. First operand 10048 states and 14990 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:40:38,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:46,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:52,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:40:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:40:55,069 INFO L93 Difference]: Finished difference Result 10069 states and 15013 transitions. [2021-11-21 01:40:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:40:55,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 88 [2021-11-21 01:40:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:40:55,130 INFO L225 Difference]: With dead ends: 10069 [2021-11-21 01:40:55,131 INFO L226 Difference]: Without dead ends: 10067 [2021-11-21 01:40:55,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:40:55,138 INFO L933 BasicCegarLoop]: 6735 mSDtfsCounter, 4733 mSDsluCounter, 17734 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4749 SdHoareTripleChecker+Valid, 22806 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:40:55,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4749 Valid, 22806 Invalid, 2373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2369 Invalid, 3 Unknown, 0 Unchecked, 19.2s Time] [2021-11-21 01:40:55,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10067 states. [2021-11-21 01:40:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10067 to 10062. [2021-11-21 01:40:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10062 states, 5927 states have (on average 1.3190484224734267) internal successors, (7818), 6344 states have internal predecessors, (7818), 3511 states have call successors, (3511), 622 states have call predecessors, (3511), 621 states have return successors, (3678), 3360 states have call predecessors, (3678), 3505 states have call successors, (3678) [2021-11-21 01:40:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10062 states to 10062 states and 15007 transitions. [2021-11-21 01:40:55,803 INFO L78 Accepts]: Start accepts. Automaton has 10062 states and 15007 transitions. Word has length 88 [2021-11-21 01:40:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:40:55,806 INFO L470 AbstractCegarLoop]: Abstraction has 10062 states and 15007 transitions. [2021-11-21 01:40:55,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:40:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10062 states and 15007 transitions. [2021-11-21 01:40:55,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-21 01:40:55,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:40:55,815 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2021-11-21 01:40:55,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:40:55,815 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:40:55,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:40:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash 534869816, now seen corresponding path program 1 times [2021-11-21 01:40:55,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:40:55,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377936729] [2021-11-21 01:40:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:40:55,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:40:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:40:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-21 01:40:56,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:40:56,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377936729] [2021-11-21 01:40:56,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377936729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:40:56,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:40:56,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:40:56,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596230359] [2021-11-21 01:40:56,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:40:56,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:40:56,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:40:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:40:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:40:56,352 INFO L87 Difference]: Start difference. First operand 10062 states and 15007 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:40:59,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:07,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:12,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:15,666 INFO L93 Difference]: Finished difference Result 10077 states and 15019 transitions. [2021-11-21 01:41:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:41:15,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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 108 [2021-11-21 01:41:15,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:15,737 INFO L225 Difference]: With dead ends: 10077 [2021-11-21 01:41:15,738 INFO L226 Difference]: Without dead ends: 10075 [2021-11-21 01:41:15,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:41:15,749 INFO L933 BasicCegarLoop]: 6737 mSDtfsCounter, 4724 mSDsluCounter, 17740 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 22812 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:15,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 22812 Invalid, 2376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2372 Invalid, 3 Unknown, 0 Unchecked, 18.8s Time] [2021-11-21 01:41:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10075 states. [2021-11-21 01:41:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10075 to 10070. [2021-11-21 01:41:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10070 states, 5933 states have (on average 1.3187257711107365) internal successors, (7824), 6350 states have internal predecessors, (7824), 3511 states have call successors, (3511), 624 states have call predecessors, (3511), 623 states have return successors, (3678), 3360 states have call predecessors, (3678), 3505 states have call successors, (3678) [2021-11-21 01:41:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10070 states to 10070 states and 15013 transitions. [2021-11-21 01:41:16,432 INFO L78 Accepts]: Start accepts. Automaton has 10070 states and 15013 transitions. Word has length 108 [2021-11-21 01:41:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:16,434 INFO L470 AbstractCegarLoop]: Abstraction has 10070 states and 15013 transitions. [2021-11-21 01:41:16,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:41:16,435 INFO L276 IsEmpty]: Start isEmpty. Operand 10070 states and 15013 transitions. [2021-11-21 01:41:16,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-21 01:41:16,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:16,441 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 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] [2021-11-21 01:41:16,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:41:16,442 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:41:16,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:16,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1349621953, now seen corresponding path program 1 times [2021-11-21 01:41:16,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:16,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233467778] [2021-11-21 01:41:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:16,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-21 01:41:16,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:16,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233467778] [2021-11-21 01:41:16,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233467778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:16,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:16,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:41:16,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976482440] [2021-11-21 01:41:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:16,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:41:16,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:41:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:16,949 INFO L87 Difference]: Start difference. First operand 10070 states and 15013 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:41:19,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:27,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:33,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:36,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:36,849 INFO L93 Difference]: Finished difference Result 10085 states and 15025 transitions. [2021-11-21 01:41:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:41:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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 113 [2021-11-21 01:41:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:36,908 INFO L225 Difference]: With dead ends: 10085 [2021-11-21 01:41:36,908 INFO L226 Difference]: Without dead ends: 10083 [2021-11-21 01:41:36,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:41:36,916 INFO L933 BasicCegarLoop]: 6735 mSDtfsCounter, 4724 mSDsluCounter, 17734 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4738 SdHoareTripleChecker+Valid, 22806 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:36,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4738 Valid, 22806 Invalid, 2373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2369 Invalid, 3 Unknown, 0 Unchecked, 19.4s Time] [2021-11-21 01:41:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10083 states. [2021-11-21 01:41:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10083 to 10078. [2021-11-21 01:41:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10078 states, 5939 states have (on average 1.3184037716787338) internal successors, (7830), 6356 states have internal predecessors, (7830), 3511 states have call successors, (3511), 626 states have call predecessors, (3511), 625 states have return successors, (3678), 3360 states have call predecessors, (3678), 3505 states have call successors, (3678) [2021-11-21 01:41:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10078 states to 10078 states and 15019 transitions. [2021-11-21 01:41:37,613 INFO L78 Accepts]: Start accepts. Automaton has 10078 states and 15019 transitions. Word has length 113 [2021-11-21 01:41:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:37,614 INFO L470 AbstractCegarLoop]: Abstraction has 10078 states and 15019 transitions. [2021-11-21 01:41:37,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:41:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 10078 states and 15019 transitions. [2021-11-21 01:41:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-21 01:41:37,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:37,618 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 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] [2021-11-21 01:41:37,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:41:37,618 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:41:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:37,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1189665324, now seen corresponding path program 1 times [2021-11-21 01:41:37,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:37,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473366817] [2021-11-21 01:41:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:37,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-21 01:41:38,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:38,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473366817] [2021-11-21 01:41:38,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473366817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:38,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:38,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:41:38,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201171699] [2021-11-21 01:41:38,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:38,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:41:38,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:38,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:41:38,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:38,071 INFO L87 Difference]: Start difference. First operand 10078 states and 15019 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:41:41,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:49,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:55,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:58,951 INFO L93 Difference]: Finished difference Result 10093 states and 15031 transitions. [2021-11-21 01:41:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:41:58,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2021-11-21 01:41:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:59,142 INFO L225 Difference]: With dead ends: 10093 [2021-11-21 01:41:59,142 INFO L226 Difference]: Without dead ends: 10091 [2021-11-21 01:41:59,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:41:59,148 INFO L933 BasicCegarLoop]: 6735 mSDtfsCounter, 4733 mSDsluCounter, 17734 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 22806 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:59,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4746 Valid, 22806 Invalid, 2373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2369 Invalid, 3 Unknown, 0 Unchecked, 20.3s Time] [2021-11-21 01:41:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10091 states. [2021-11-21 01:41:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10091 to 10086. [2021-11-21 01:41:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10086 states, 5945 states have (on average 1.3180824222035323) internal successors, (7836), 6362 states have internal predecessors, (7836), 3511 states have call successors, (3511), 628 states have call predecessors, (3511), 627 states have return successors, (3678), 3360 states have call predecessors, (3678), 3505 states have call successors, (3678) [2021-11-21 01:41:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10086 states to 10086 states and 15025 transitions. [2021-11-21 01:41:59,835 INFO L78 Accepts]: Start accepts. Automaton has 10086 states and 15025 transitions. Word has length 103 [2021-11-21 01:41:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:59,838 INFO L470 AbstractCegarLoop]: Abstraction has 10086 states and 15025 transitions. [2021-11-21 01:41:59,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 01:41:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 10086 states and 15025 transitions. [2021-11-21 01:41:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 01:41:59,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:59,841 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 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] [2021-11-21 01:41:59,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:41:59,842 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:41:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash 720010977, now seen corresponding path program 1 times [2021-11-21 01:41:59,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:59,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614671903] [2021-11-21 01:41:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:59,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-21 01:42:00,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:00,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614671903] [2021-11-21 01:42:00,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614671903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:00,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:00,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:42:00,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566692827] [2021-11-21 01:42:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:00,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:42:00,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:42:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:42:00,360 INFO L87 Difference]: Start difference. First operand 10086 states and 15025 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:42:03,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:11,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:17,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:20,655 INFO L93 Difference]: Finished difference Result 10101 states and 15037 transitions. [2021-11-21 01:42:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:20,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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 123 [2021-11-21 01:42:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:20,722 INFO L225 Difference]: With dead ends: 10101 [2021-11-21 01:42:20,722 INFO L226 Difference]: Without dead ends: 10099 [2021-11-21 01:42:20,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:42:20,733 INFO L933 BasicCegarLoop]: 6737 mSDtfsCounter, 4724 mSDsluCounter, 17740 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4736 SdHoareTripleChecker+Valid, 22812 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:20,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4736 Valid, 22812 Invalid, 2376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2372 Invalid, 3 Unknown, 0 Unchecked, 19.7s Time] [2021-11-21 01:42:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10099 states. [2021-11-21 01:42:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10099 to 10094. [2021-11-21 01:42:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10094 states, 5951 states have (on average 1.317761720719207) internal successors, (7842), 6368 states have internal predecessors, (7842), 3511 states have call successors, (3511), 630 states have call predecessors, (3511), 629 states have return successors, (3678), 3360 states have call predecessors, (3678), 3505 states have call successors, (3678) [2021-11-21 01:42:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10094 states to 10094 states and 15031 transitions. [2021-11-21 01:42:21,544 INFO L78 Accepts]: Start accepts. Automaton has 10094 states and 15031 transitions. Word has length 123 [2021-11-21 01:42:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:21,545 INFO L470 AbstractCegarLoop]: Abstraction has 10094 states and 15031 transitions. [2021-11-21 01:42:21,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:42:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 10094 states and 15031 transitions. [2021-11-21 01:42:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-21 01:42:21,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:21,549 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 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] [2021-11-21 01:42:21,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:42:21,549 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:42:21,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:21,550 INFO L85 PathProgramCache]: Analyzing trace with hash -709936648, now seen corresponding path program 1 times [2021-11-21 01:42:21,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:21,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426248442] [2021-11-21 01:42:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:21,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-21 01:42:22,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:22,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426248442] [2021-11-21 01:42:22,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426248442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:22,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:22,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:42:22,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267669193] [2021-11-21 01:42:22,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:22,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:42:22,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:42:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:42:22,018 INFO L87 Difference]: Start difference. First operand 10094 states and 15031 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:42:25,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:32,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:38,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:42,266 INFO L93 Difference]: Finished difference Result 10109 states and 15043 transitions. [2021-11-21 01:42:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:42,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 128 [2021-11-21 01:42:42,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:42,331 INFO L225 Difference]: With dead ends: 10109 [2021-11-21 01:42:42,331 INFO L226 Difference]: Without dead ends: 10107 [2021-11-21 01:42:42,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:42:42,342 INFO L933 BasicCegarLoop]: 6737 mSDtfsCounter, 4724 mSDsluCounter, 17740 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4735 SdHoareTripleChecker+Valid, 22812 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:42,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4735 Valid, 22812 Invalid, 2376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2372 Invalid, 3 Unknown, 0 Unchecked, 19.6s Time] [2021-11-21 01:42:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10107 states. [2021-11-21 01:42:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 10102. [2021-11-21 01:42:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10102 states, 5957 states have (on average 1.3174416652677523) internal successors, (7848), 6374 states have internal predecessors, (7848), 3511 states have call successors, (3511), 632 states have call predecessors, (3511), 631 states have return successors, (3678), 3360 states have call predecessors, (3678), 3505 states have call successors, (3678) [2021-11-21 01:42:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10102 states to 10102 states and 15037 transitions. [2021-11-21 01:42:43,092 INFO L78 Accepts]: Start accepts. Automaton has 10102 states and 15037 transitions. Word has length 128 [2021-11-21 01:42:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:43,093 INFO L470 AbstractCegarLoop]: Abstraction has 10102 states and 15037 transitions. [2021-11-21 01:42:43,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:42:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 10102 states and 15037 transitions. [2021-11-21 01:42:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 01:42:43,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:43,098 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 6, 6, 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] [2021-11-21 01:42:43,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:42:43,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:42:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2029785855, now seen corresponding path program 1 times [2021-11-21 01:42:43,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:43,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539982729] [2021-11-21 01:42:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:43,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-21 01:42:43,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:43,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539982729] [2021-11-21 01:42:43,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539982729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:43,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:43,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:42:43,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122495912] [2021-11-21 01:42:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:43,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:42:43,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:42:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:42:43,655 INFO L87 Difference]: Start difference. First operand 10102 states and 15037 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-21 01:42:46,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:55,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:01,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:05,146 INFO L93 Difference]: Finished difference Result 10117 states and 15049 transitions. [2021-11-21 01:43:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:43:05,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 133 [2021-11-21 01:43:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:05,196 INFO L225 Difference]: With dead ends: 10117 [2021-11-21 01:43:05,196 INFO L226 Difference]: Without dead ends: 10113 [2021-11-21 01:43:05,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:43:05,204 INFO L933 BasicCegarLoop]: 6735 mSDtfsCounter, 4724 mSDsluCounter, 17734 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4734 SdHoareTripleChecker+Valid, 22806 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:05,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4734 Valid, 22806 Invalid, 2373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2369 Invalid, 3 Unknown, 0 Unchecked, 20.8s Time] [2021-11-21 01:43:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10113 states. [2021-11-21 01:43:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10113 to 10108. [2021-11-21 01:43:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10108 states, 5962 states have (on average 1.3170077155317008) internal successors, (7852), 6378 states have internal predecessors, (7852), 3511 states have call successors, (3511), 634 states have call predecessors, (3511), 632 states have return successors, (3678), 3360 states have call predecessors, (3678), 3505 states have call successors, (3678) [2021-11-21 01:43:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 15041 transitions. [2021-11-21 01:43:05,886 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 15041 transitions. Word has length 133 [2021-11-21 01:43:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:05,887 INFO L470 AbstractCegarLoop]: Abstraction has 10108 states and 15041 transitions. [2021-11-21 01:43:05,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-21 01:43:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 15041 transitions. [2021-11-21 01:43:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 01:43:05,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:05,891 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 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] [2021-11-21 01:43:05,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:43:05,892 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:43:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1291772564, now seen corresponding path program 1 times [2021-11-21 01:43:05,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:05,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559686140] [2021-11-21 01:43:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:05,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-21 01:43:06,359 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:06,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559686140] [2021-11-21 01:43:06,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559686140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:06,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:06,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:43:06,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649988926] [2021-11-21 01:43:06,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:06,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:43:06,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:43:06,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:43:06,361 INFO L87 Difference]: Start difference. First operand 10108 states and 15041 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:43:09,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:17,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:24,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:27,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:27,672 INFO L93 Difference]: Finished difference Result 10119 states and 15049 transitions. [2021-11-21 01:43:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:43:27,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 123 [2021-11-21 01:43:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:27,726 INFO L225 Difference]: With dead ends: 10119 [2021-11-21 01:43:27,726 INFO L226 Difference]: Without dead ends: 9996 [2021-11-21 01:43:27,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:43:27,737 INFO L933 BasicCegarLoop]: 6736 mSDtfsCounter, 4733 mSDsluCounter, 17736 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4742 SdHoareTripleChecker+Valid, 22809 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:27,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4742 Valid, 22809 Invalid, 2370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2366 Invalid, 3 Unknown, 0 Unchecked, 20.6s Time] [2021-11-21 01:43:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9996 states. [2021-11-21 01:43:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9996 to 9991. [2021-11-21 01:43:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9991 states, 5895 states have (on average 1.3195928753180661) internal successors, (7779), 6308 states have internal predecessors, (7779), 3480 states have call successors, (3480), 614 states have call predecessors, (3480), 613 states have return successors, (3650), 3332 states have call predecessors, (3650), 3477 states have call successors, (3650) [2021-11-21 01:43:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9991 states to 9991 states and 14909 transitions. [2021-11-21 01:43:28,589 INFO L78 Accepts]: Start accepts. Automaton has 9991 states and 14909 transitions. Word has length 123 [2021-11-21 01:43:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:28,592 INFO L470 AbstractCegarLoop]: Abstraction has 9991 states and 14909 transitions. [2021-11-21 01:43:28,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-21 01:43:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 9991 states and 14909 transitions. [2021-11-21 01:43:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-21 01:43:28,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:28,615 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:43:28,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:43:28,616 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:43:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1985231187, now seen corresponding path program 1 times [2021-11-21 01:43:28,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:28,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488428271] [2021-11-21 01:43:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:28,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 01:43:29,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:29,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488428271] [2021-11-21 01:43:29,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488428271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:29,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:29,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:43:29,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961879206] [2021-11-21 01:43:29,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:29,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:43:29,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:43:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:43:29,171 INFO L87 Difference]: Start difference. First operand 9991 states and 14909 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 01:43:31,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:37,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:43,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:45,030 INFO L93 Difference]: Finished difference Result 20271 states and 30314 transitions. [2021-11-21 01:43:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:43:45,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 185 [2021-11-21 01:43:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:45,083 INFO L225 Difference]: With dead ends: 20271 [2021-11-21 01:43:45,083 INFO L226 Difference]: Without dead ends: 10311 [2021-11-21 01:43:45,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:43:45,164 INFO L933 BasicCegarLoop]: 4890 mSDtfsCounter, 447 mSDsluCounter, 10421 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 151 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 14309 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:45,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 14309 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1519 Invalid, 3 Unknown, 0 Unchecked, 15.2s Time] [2021-11-21 01:43:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10311 states. [2021-11-21 01:43:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10311 to 9993. [2021-11-21 01:43:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9993 states, 5897 states have (on average 1.3194844836357469) internal successors, (7781), 6310 states have internal predecessors, (7781), 3480 states have call successors, (3480), 614 states have call predecessors, (3480), 613 states have return successors, (3650), 3332 states have call predecessors, (3650), 3477 states have call successors, (3650) [2021-11-21 01:43:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9993 states to 9993 states and 14911 transitions. [2021-11-21 01:43:45,800 INFO L78 Accepts]: Start accepts. Automaton has 9993 states and 14911 transitions. Word has length 185 [2021-11-21 01:43:45,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:45,801 INFO L470 AbstractCegarLoop]: Abstraction has 9993 states and 14911 transitions. [2021-11-21 01:43:45,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 01:43:45,801 INFO L276 IsEmpty]: Start isEmpty. Operand 9993 states and 14911 transitions. [2021-11-21 01:43:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-21 01:43:45,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:45,812 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:43:45,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:43:45,813 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:43:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash -321151995, now seen corresponding path program 1 times [2021-11-21 01:43:45,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:45,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526614839] [2021-11-21 01:43:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:45,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:46,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:46,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184340847] [2021-11-21 01:43:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:46,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:46,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:46,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:46,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:43:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:48,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 6868 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:43:48,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-21 01:43:50,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:43:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-21 01:43:51,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:51,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526614839] [2021-11-21 01:43:51,857 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:43:51,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184340847] [2021-11-21 01:43:51,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184340847] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:43:51,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:43:51,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-21 01:43:51,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345581940] [2021-11-21 01:43:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:51,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:43:51,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:43:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:43:51,861 INFO L87 Difference]: Start difference. First operand 9993 states and 14911 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 01:43:54,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:56,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:06,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:08,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:11,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:20,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:22,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:24,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:26,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:46,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:44:49,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:45:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:45:05,932 INFO L93 Difference]: Finished difference Result 13667 states and 20602 transitions. [2021-11-21 01:45:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:45:05,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 187 [2021-11-21 01:45:05,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:45:06,176 INFO L225 Difference]: With dead ends: 13667 [2021-11-21 01:45:06,176 INFO L226 Difference]: Without dead ends: 13626 [2021-11-21 01:45:06,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:45:06,187 INFO L933 BasicCegarLoop]: 7093 mSDtfsCounter, 8469 mSDsluCounter, 17655 mSDsCounter, 0 mSdLazyCounter, 8952 mSolverCounterSat, 3455 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9255 SdHoareTripleChecker+Valid, 23048 SdHoareTripleChecker+Invalid, 12416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3455 IncrementalHoareTripleChecker+Valid, 8952 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:45:06,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9255 Valid, 23048 Invalid, 12416 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3455 Valid, 8952 Invalid, 9 Unknown, 0 Unchecked, 72.7s Time] [2021-11-21 01:45:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13626 states. [2021-11-21 01:45:07,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13626 to 13611. [2021-11-21 01:45:07,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13611 states, 8031 states have (on average 1.3216286888307807) internal successors, (10614), 8621 states have internal predecessors, (10614), 4787 states have call successors, (4787), 780 states have call predecessors, (4787), 790 states have return successors, (5132), 4556 states have call predecessors, (5132), 4784 states have call successors, (5132) [2021-11-21 01:45:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 20533 transitions. [2021-11-21 01:45:07,142 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 20533 transitions. Word has length 187 [2021-11-21 01:45:07,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:45:07,143 INFO L470 AbstractCegarLoop]: Abstraction has 13611 states and 20533 transitions. [2021-11-21 01:45:07,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 01:45:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 20533 transitions. [2021-11-21 01:45:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-21 01:45:07,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:45:07,180 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:45:07,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:45:07,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:45:07,407 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:45:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:45:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1557068559, now seen corresponding path program 1 times [2021-11-21 01:45:07,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:45:07,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119773441] [2021-11-21 01:45:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:07,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:45:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-21 01:45:07,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:45:07,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119773441] [2021-11-21 01:45:07,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119773441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:45:07,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:45:07,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:45:07,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725783495] [2021-11-21 01:45:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:45:07,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:45:07,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:45:07,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:45:07,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:45:07,868 INFO L87 Difference]: Start difference. First operand 13611 states and 20533 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-21 01:45:10,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:45:13,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:45:16,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:45:21,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:45:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:45:22,832 INFO L93 Difference]: Finished difference Result 27194 states and 41059 transitions. [2021-11-21 01:45:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:45:22,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 242 [2021-11-21 01:45:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:45:22,918 INFO L225 Difference]: With dead ends: 27194 [2021-11-21 01:45:22,918 INFO L226 Difference]: Without dead ends: 13614 [2021-11-21 01:45:22,978 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:45:22,979 INFO L933 BasicCegarLoop]: 4805 mSDtfsCounter, 1 mSDsluCounter, 5309 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9607 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:45:22,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 9607 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1021 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2021-11-21 01:45:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13614 states. [2021-11-21 01:45:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13614 to 13612. [2021-11-21 01:45:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13612 states, 8032 states have (on average 1.3215886454183268) internal successors, (10615), 8622 states have internal predecessors, (10615), 4787 states have call successors, (4787), 780 states have call predecessors, (4787), 790 states have return successors, (5132), 4556 states have call predecessors, (5132), 4784 states have call successors, (5132) [2021-11-21 01:45:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13612 states to 13612 states and 20534 transitions. [2021-11-21 01:45:23,769 INFO L78 Accepts]: Start accepts. Automaton has 13612 states and 20534 transitions. Word has length 242 [2021-11-21 01:45:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:45:23,769 INFO L470 AbstractCegarLoop]: Abstraction has 13612 states and 20534 transitions. [2021-11-21 01:45:23,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-21 01:45:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 13612 states and 20534 transitions. [2021-11-21 01:45:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-21 01:45:23,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:45:23,800 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:45:23,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 01:45:23,801 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:45:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:45:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1761190512, now seen corresponding path program 1 times [2021-11-21 01:45:23,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:45:23,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297810871] [2021-11-21 01:45:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:23,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:45:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-21 01:45:24,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:45:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297810871] [2021-11-21 01:45:24,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297810871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:45:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950588524] [2021-11-21 01:45:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:24,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:45:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:45:24,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:45:24,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:45:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:26,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 7267 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:45:26,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:45:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-21 01:45:28,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:45:28,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950588524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:45:28,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:45:28,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-21 01:45:28,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047473587] [2021-11-21 01:45:28,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:45:28,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:45:28,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:45:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:45:28,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:45:28,609 INFO L87 Difference]: Start difference. First operand 13612 states and 20534 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-21 01:45:30,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:45:35,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:45:38,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:45:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:45:39,844 INFO L93 Difference]: Finished difference Result 27174 states and 41050 transitions. [2021-11-21 01:45:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:45:39,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 247 [2021-11-21 01:45:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:45:39,947 INFO L225 Difference]: With dead ends: 27174 [2021-11-21 01:45:39,948 INFO L226 Difference]: Without dead ends: 13593 [2021-11-21 01:45:40,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:45:40,039 INFO L933 BasicCegarLoop]: 4786 mSDtfsCounter, 5172 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5179 SdHoareTripleChecker+Valid, 4788 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:45:40,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5179 Valid, 4788 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 512 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2021-11-21 01:45:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13593 states. [2021-11-21 01:45:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13593 to 13593. [2021-11-21 01:45:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13593 states, 8030 states have (on average 1.3204234122042342) internal successors, (10603), 8614 states have internal predecessors, (10603), 4770 states have call successors, (4770), 780 states have call predecessors, (4770), 790 states have return successors, (5115), 4544 states have call predecessors, (5115), 4767 states have call successors, (5115) [2021-11-21 01:45:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13593 states to 13593 states and 20488 transitions. [2021-11-21 01:45:41,171 INFO L78 Accepts]: Start accepts. Automaton has 13593 states and 20488 transitions. Word has length 247 [2021-11-21 01:45:41,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:45:41,172 INFO L470 AbstractCegarLoop]: Abstraction has 13593 states and 20488 transitions. [2021-11-21 01:45:41,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-21 01:45:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 13593 states and 20488 transitions. [2021-11-21 01:45:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-21 01:45:41,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:45:41,207 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 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] [2021-11-21 01:45:41,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:45:41,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 01:45:41,423 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:45:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:45:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1855551182, now seen corresponding path program 1 times [2021-11-21 01:45:41,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:45:41,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046918568] [2021-11-21 01:45:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:41,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:45:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2021-11-21 01:45:42,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:45:42,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046918568] [2021-11-21 01:45:42,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046918568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:45:42,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101554979] [2021-11-21 01:45:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:45:42,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:45:42,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:45:42,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:45:42,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cf15c6c-5be3-4fe0-bd15-7fc22fcaf5ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:45:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:45:44,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 7826 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:45:44,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:45:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 231 proven. 1 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-11-21 01:45:45,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:45:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2021-11-21 01:45:46,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101554979] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:45:46,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1012185655] [2021-11-21 01:45:46,982 INFO L159 IcfgInterpreter]: Started Sifa with 205 locations of interest [2021-11-21 01:45:46,982 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:45:46,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:45:47,004 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:45:47,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs