./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V --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 08fd1f25b7d22203947cf6c4ad8cac3aedaa56ca5536c5ddc05b18633d46ecf5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:50:50,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:50:50,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:50:50,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:50:50,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:50:50,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:50:50,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:50:50,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:50:50,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:50:50,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:50:50,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:50:50,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:50:50,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:50:50,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:50:50,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:50:50,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:50:50,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:50:50,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:50:50,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:50:50,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:50:50,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:50:50,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:50:50,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:50:50,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:50:50,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:50:50,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:50:50,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:50:50,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:50:50,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:50:50,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:50:50,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:50:50,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:50:50,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:50:50,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:50:50,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:50:50,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:50:50,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:50:50,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:50:50,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:50:50,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:50:50,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:50:50,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 01:50:50,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:50:50,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:50:50,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:50:50,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:50:50,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:50:50,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:50:50,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:50:50,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:50:50,914 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:50:50,914 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:50:50,915 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:50:50,916 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:50:50,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:50:50,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:50:50,917 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:50:50,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:50:50,917 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:50:50,917 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:50:50,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:50:50,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:50:50,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:50:50,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:50:50,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:50:50,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:50:50,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:50:50,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:50:50,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:50:50,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:50:50,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:50:50,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:50:50,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:50:50,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:50:50,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:50:50,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:50:50,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:50:50,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:50:50,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:50:50,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:50:50,926 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_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08fd1f25b7d22203947cf6c4ad8cac3aedaa56ca5536c5ddc05b18633d46ecf5 [2021-11-23 01:50:51,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:50:51,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:50:51,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:50:51,333 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:50:51,334 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:50:51,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 01:50:51,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/data/f18e954e4/27ae087be2ee46a49a1bc11daf0d3469/FLAG89ce213f7 [2021-11-23 01:50:52,706 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:50:52,708 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 01:50:52,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/data/f18e954e4/27ae087be2ee46a49a1bc11daf0d3469/FLAG89ce213f7 [2021-11-23 01:50:52,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/data/f18e954e4/27ae087be2ee46a49a1bc11daf0d3469 [2021-11-23 01:50:52,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:50:52,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:50:52,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:50:52,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:50:52,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:50:52,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:52" (1/1) ... [2021-11-23 01:50:52,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6830b032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:52, skipping insertion in model container [2021-11-23 01:50:52,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:52" (1/1) ... [2021-11-23 01:50:52,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:50:53,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:50:57,466 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_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470736,470749] [2021-11-23 01:50:57,470 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_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470902,470915] [2021-11-23 01:50:57,471 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_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471066,471079] [2021-11-23 01:50:57,472 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_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471231,471244] [2021-11-23 01:50:57,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:50:57,581 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:50:58,192 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_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470736,470749] [2021-11-23 01:50:58,193 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_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470902,470915] [2021-11-23 01:50:58,194 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471066,471079] [2021-11-23 01:50:58,194 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471231,471244] [2021-11-23 01:50:58,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:50:58,546 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:50:58,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58 WrapperNode [2021-11-23 01:50:58,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:50:58,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:50:58,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:50:58,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:50:58,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:58,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,219 INFO L137 Inliner]: procedures = 410, calls = 4510, calls flagged for inlining = 226, calls inlined = 200, statements flattened = 9274 [2021-11-23 01:50:59,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:50:59,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:50:59,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:50:59,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:50:59,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:50:59,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:50:59,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:50:59,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:50:59,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (1/1) ... [2021-11-23 01:50:59,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:50:59,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:50:59,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:50:59,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c4e6ff2-abe5-4fc1-8676-864edff7b887/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:50:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-23 01:50:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-23 01:50:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-23 01:50:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-23 01:50:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-23 01:50:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-23 01:50:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-23 01:50:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-23 01:50:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 01:50:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 01:50:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-23 01:50:59,840 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-23 01:50:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-23 01:50:59,840 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-23 01:50:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 01:50:59,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 01:50:59,840 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-23 01:50:59,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-23 01:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-23 01:50:59,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-23 01:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-23 01:50:59,841 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-23 01:50:59,841 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-23 01:50:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-23 01:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-23 01:50:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-23 01:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-23 01:50:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-23 01:50:59,842 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-23 01:50:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-23 01:50:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 01:50:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 01:50:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-23 01:50:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-23 01:50:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 01:50:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 01:50:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 01:50:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 01:50:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-23 01:50:59,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-23 01:50:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:50:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-23 01:50:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-23 01:50:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-23 01:50:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-23 01:50:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-23 01:50:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-23 01:50:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-23 01:50:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-23 01:50:59,846 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 01:50:59,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 01:50:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-23 01:50:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-23 01:50:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-23 01:50:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-23 01:50:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-23 01:50:59,847 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-23 01:50:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-23 01:50:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-23 01:50:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:50:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-23 01:50:59,848 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-23 01:50:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-23 01:50:59,849 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-23 01:50:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:50:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 01:50:59,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 01:50:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-23 01:50:59,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-23 01:50:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-23 01:50:59,850 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-23 01:50:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:50:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-23 01:50:59,850 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-23 01:50:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 01:50:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 01:50:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 01:50:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 01:50:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-23 01:50:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-23 01:50:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_command_lock_of_rndis_wlan_private [2021-11-23 01:50:59,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_command_lock_of_rndis_wlan_private [2021-11-23 01:50:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-23 01:50:59,852 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-23 01:50:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-23 01:50:59,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-23 01:50:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:50:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-23 01:50:59,853 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-23 01:50:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-23 01:50:59,853 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-23 01:50:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 01:50:59,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 01:50:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-23 01:50:59,854 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-23 01:50:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 01:50:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 01:50:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:50:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-23 01:50:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-23 01:50:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 01:50:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 01:50:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-23 01:50:59,856 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-23 01:50:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:50:59,856 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-23 01:50:59,856 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-23 01:50:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-23 01:50:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-23 01:50:59,862 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:50:59,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:50:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-23 01:50:59,864 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-23 01:50:59,864 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-23 01:50:59,864 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-23 01:50:59,870 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 01:50:59,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 01:50:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-23 01:50:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-23 01:50:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-23 01:50:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-23 01:50:59,871 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 01:50:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 01:50:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:50:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:50:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 01:50:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 01:50:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-23 01:50:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-23 01:50:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:50:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:50:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 01:50:59,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 01:50:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-23 01:50:59,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-23 01:50:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 01:50:59,874 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 01:50:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-23 01:50:59,874 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-23 01:50:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 01:50:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 01:50:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-23 01:50:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-23 01:50:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 01:50:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 01:50:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-23 01:50:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-23 01:50:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-23 01:50:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-23 01:50:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-23 01:50:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-23 01:50:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-23 01:50:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-23 01:50:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 01:50:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 01:50:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 01:50:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 01:50:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 01:50:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 01:50:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:50:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 01:50:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 01:50:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-23 01:50:59,878 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-23 01:50:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:50:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-23 01:50:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-23 01:50:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-23 01:50:59,879 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-23 01:50:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-23 01:50:59,880 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-23 01:50:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-23 01:50:59,880 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-23 01:50:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:50:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-23 01:50:59,881 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-23 01:50:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 01:50:59,881 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 01:50:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-23 01:50:59,882 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-23 01:50:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 01:50:59,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 01:50:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-23 01:50:59,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-23 01:50:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 01:50:59,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 01:50:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 01:50:59,884 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 01:50:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-23 01:50:59,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-23 01:50:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-23 01:50:59,885 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-23 01:50:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 01:50:59,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 01:50:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-23 01:50:59,886 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-23 01:50:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 01:50:59,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 01:50:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-23 01:50:59,886 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-23 01:50:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-23 01:50:59,887 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-23 01:50:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 01:50:59,887 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 01:50:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 01:50:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 01:50:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-23 01:50:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-23 01:50:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-23 01:50:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-23 01:50:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-23 01:50:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-23 01:50:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:50:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-23 01:50:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-23 01:50:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 01:50:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 01:50:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_command_lock_of_rndis_wlan_private [2021-11-23 01:50:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_command_lock_of_rndis_wlan_private [2021-11-23 01:50:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-23 01:50:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-23 01:50:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-23 01:50:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-23 01:50:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 01:50:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 01:50:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-23 01:50:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-23 01:50:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 01:50:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 01:50:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 01:50:59,893 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 01:50:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-23 01:50:59,894 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-23 01:50:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-23 01:50:59,897 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-23 01:50:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-23 01:50:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-23 01:50:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-23 01:50:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-23 01:50:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-23 01:50:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-23 01:50:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-23 01:50:59,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:50:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-23 01:50:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-23 01:50:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-23 01:50:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-23 01:50:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 01:50:59,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 01:51:01,206 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:51:01,212 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:51:01,737 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 01:51:22,401 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 01:51:22,754 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:51:24,352 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:51:24,352 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:51:24,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:24 BoogieIcfgContainer [2021-11-23 01:51:24,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:51:24,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:51:24,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:51:24,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:51:24,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:50:52" (1/3) ... [2021-11-23 01:51:24,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d568c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:24, skipping insertion in model container [2021-11-23 01:51:24,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:58" (2/3) ... [2021-11-23 01:51:24,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d568c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:24, skipping insertion in model container [2021-11-23 01:51:24,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:24" (3/3) ... [2021-11-23 01:51:24,367 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-23 01:51:24,378 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:51:24,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 01:51:24,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:51:24,471 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 [2021-11-23 01:51:24,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 01:51:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 2034 states, 1236 states have (on average 1.3122977346278317) internal successors, (1622), 1240 states have internal predecessors, (1622), 680 states have call successors, (680), 116 states have call predecessors, (680), 115 states have return successors, (672), 672 states have call predecessors, (672), 672 states have call successors, (672) [2021-11-23 01:51:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-23 01:51:24,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:24,593 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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] [2021-11-23 01:51:24,594 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:51:24,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:24,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1717882288, now seen corresponding path program 1 times [2021-11-23 01:51:24,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:24,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574551557] [2021-11-23 01:51:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:24,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-23 01:51:25,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:25,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574551557] [2021-11-23 01:51:25,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574551557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:25,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:25,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:25,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035480726] [2021-11-23 01:51:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:25,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:25,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:25,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:25,887 INFO L87 Difference]: Start difference. First operand has 2034 states, 1236 states have (on average 1.3122977346278317) internal successors, (1622), 1240 states have internal predecessors, (1622), 680 states have call successors, (680), 116 states have call predecessors, (680), 115 states have return successors, (672), 672 states have call predecessors, (672), 672 states have call successors, (672) Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-23 01:51:29,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:32,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:34,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:36,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:36,050 INFO L93 Difference]: Finished difference Result 5872 states and 8877 transitions. [2021-11-23 01:51:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:36,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 384 [2021-11-23 01:51:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:36,138 INFO L225 Difference]: With dead ends: 5872 [2021-11-23 01:51:36,138 INFO L226 Difference]: Without dead ends: 3899 [2021-11-23 01:51:36,174 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 [2021-11-23 01:51:36,181 INFO L933 BasicCegarLoop]: 3194 mSDtfsCounter, 2767 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 5676 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:36,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2774 Valid, 5676 Invalid, 926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 910 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-23 01:51:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-11-23 01:51:36,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3895. [2021-11-23 01:51:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 2388 states have (on average 1.3086264656616415) internal successors, (3125), 2395 states have internal predecessors, (3125), 1278 states have call successors, (1278), 227 states have call predecessors, (1278), 226 states have return successors, (1281), 1274 states have call predecessors, (1281), 1274 states have call successors, (1281) [2021-11-23 01:51:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 5684 transitions. [2021-11-23 01:51:36,733 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 5684 transitions. Word has length 384 [2021-11-23 01:51:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:36,737 INFO L470 AbstractCegarLoop]: Abstraction has 3895 states and 5684 transitions. [2021-11-23 01:51:36,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-23 01:51:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 5684 transitions. [2021-11-23 01:51:36,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-11-23 01:51:36,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:36,762 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:36,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:51:36,763 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:51:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash -255544321, now seen corresponding path program 1 times [2021-11-23 01:51:36,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:36,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473903045] [2021-11-23 01:51:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:36,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-23 01:51:37,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473903045] [2021-11-23 01:51:37,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473903045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:37,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:37,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:37,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979152339] [2021-11-23 01:51:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:37,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:37,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:37,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:37,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:37,395 INFO L87 Difference]: Start difference. First operand 3895 states and 5684 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 01:51:40,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:43,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:45,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:47,324 INFO L93 Difference]: Finished difference Result 9562 states and 13936 transitions. [2021-11-23 01:51:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 403 [2021-11-23 01:51:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:47,379 INFO L225 Difference]: With dead ends: 9562 [2021-11-23 01:51:47,380 INFO L226 Difference]: Without dead ends: 5740 [2021-11-23 01:51:47,403 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 [2021-11-23 01:51:47,405 INFO L933 BasicCegarLoop]: 3174 mSDtfsCounter, 2725 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2732 SdHoareTripleChecker+Valid, 5651 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:47,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2732 Valid, 5651 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-23 01:51:47,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2021-11-23 01:51:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5721. [2021-11-23 01:51:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 3520 states have (on average 1.3068181818181819) internal successors, (4600), 3533 states have internal predecessors, (4600), 1856 states have call successors, (1856), 343 states have call predecessors, (1856), 342 states have return successors, (1866), 1847 states have call predecessors, (1866), 1852 states have call successors, (1866) [2021-11-23 01:51:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 8322 transitions. [2021-11-23 01:51:47,777 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 8322 transitions. Word has length 403 [2021-11-23 01:51:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:47,780 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 8322 transitions. [2021-11-23 01:51:47,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 01:51:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 8322 transitions. [2021-11-23 01:51:47,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-23 01:51:47,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:47,793 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:47,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:51:47,794 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:51:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash -829006890, now seen corresponding path program 1 times [2021-11-23 01:51:47,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:47,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309985827] [2021-11-23 01:51:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:47,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-23 01:51:48,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:48,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309985827] [2021-11-23 01:51:48,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309985827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:48,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:48,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:48,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099251500] [2021-11-23 01:51:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:48,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:48,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:48,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:48,438 INFO L87 Difference]: Start difference. First operand 5721 states and 8322 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 01:51:51,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:54,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:56,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:51:58,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:51:58,084 INFO L93 Difference]: Finished difference Result 15040 states and 21860 transitions. [2021-11-23 01:51:58,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:51:58,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 402 [2021-11-23 01:51:58,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:51:58,182 INFO L225 Difference]: With dead ends: 15040 [2021-11-23 01:51:58,183 INFO L226 Difference]: Without dead ends: 9392 [2021-11-23 01:51:58,220 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 [2021-11-23 01:51:58,224 INFO L933 BasicCegarLoop]: 3213 mSDtfsCounter, 2726 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2733 SdHoareTripleChecker+Valid, 5690 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:51:58,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2733 Valid, 5690 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 924 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-11-23 01:51:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9392 states. [2021-11-23 01:51:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9392 to 9373. [2021-11-23 01:51:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9373 states, 5784 states have (on average 1.3053250345781466) internal successors, (7550), 5809 states have internal predecessors, (7550), 3012 states have call successors, (3012), 575 states have call predecessors, (3012), 574 states have return successors, (3036), 2993 states have call predecessors, (3036), 3008 states have call successors, (3036) [2021-11-23 01:51:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9373 states to 9373 states and 13598 transitions. [2021-11-23 01:51:58,843 INFO L78 Accepts]: Start accepts. Automaton has 9373 states and 13598 transitions. Word has length 402 [2021-11-23 01:51:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:51:58,844 INFO L470 AbstractCegarLoop]: Abstraction has 9373 states and 13598 transitions. [2021-11-23 01:51:58,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 01:51:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 9373 states and 13598 transitions. [2021-11-23 01:51:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-23 01:51:58,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:51:58,858 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:51:58,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:51:58,859 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:51:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:51:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1920327043, now seen corresponding path program 1 times [2021-11-23 01:51:58,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:51:58,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275059793] [2021-11-23 01:51:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:51:58,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:51:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:51:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-23 01:51:59,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:51:59,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275059793] [2021-11-23 01:51:59,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275059793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:51:59,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:51:59,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:51:59,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381439213] [2021-11-23 01:51:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:51:59,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:51:59,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:51:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:51:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:51:59,305 INFO L87 Difference]: Start difference. First operand 9373 states and 13598 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 01:52:02,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:05,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:07,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:09,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:09,268 INFO L93 Difference]: Finished difference Result 25583 states and 37111 transitions. [2021-11-23 01:52:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:09,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 404 [2021-11-23 01:52:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:09,399 INFO L225 Difference]: With dead ends: 25583 [2021-11-23 01:52:09,399 INFO L226 Difference]: Without dead ends: 16283 [2021-11-23 01:52:09,457 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 [2021-11-23 01:52:09,458 INFO L933 BasicCegarLoop]: 3431 mSDtfsCounter, 2724 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 5908 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:09,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2731 Valid, 5908 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 993 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-23 01:52:09,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16283 states. [2021-11-23 01:52:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16283 to 16264. [2021-11-23 01:52:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16264 states, 10061 states have (on average 1.30374714243117) internal successors, (13117), 10110 states have internal predecessors, (13117), 5192 states have call successors, (5192), 1009 states have call predecessors, (5192), 1008 states have return successors, (5244), 5153 states have call predecessors, (5244), 5188 states have call successors, (5244) [2021-11-23 01:52:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16264 states to 16264 states and 23553 transitions. [2021-11-23 01:52:10,420 INFO L78 Accepts]: Start accepts. Automaton has 16264 states and 23553 transitions. Word has length 404 [2021-11-23 01:52:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:10,422 INFO L470 AbstractCegarLoop]: Abstraction has 16264 states and 23553 transitions. [2021-11-23 01:52:10,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 01:52:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 16264 states and 23553 transitions. [2021-11-23 01:52:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-23 01:52:10,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:10,435 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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] [2021-11-23 01:52:10,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:52:10,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:52:10,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash -180409085, now seen corresponding path program 1 times [2021-11-23 01:52:10,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:10,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710132121] [2021-11-23 01:52:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:10,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2021-11-23 01:52:10,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:10,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710132121] [2021-11-23 01:52:10,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710132121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:10,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:10,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:10,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731641352] [2021-11-23 01:52:10,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:10,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:10,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:10,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:10,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:10,968 INFO L87 Difference]: Start difference. First operand 16264 states and 23553 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-23 01:52:14,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:17,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:19,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:20,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:20,700 INFO L93 Difference]: Finished difference Result 47400 states and 68618 transitions. [2021-11-23 01:52:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:20,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 409 [2021-11-23 01:52:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:20,888 INFO L225 Difference]: With dead ends: 47400 [2021-11-23 01:52:20,888 INFO L226 Difference]: Without dead ends: 31209 [2021-11-23 01:52:20,962 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 [2021-11-23 01:52:20,963 INFO L933 BasicCegarLoop]: 3811 mSDtfsCounter, 2673 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 6292 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:20,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2680 Valid, 6292 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1082 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 01:52:21,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31209 states. [2021-11-23 01:52:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31209 to 31174. [2021-11-23 01:52:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31174 states, 19332 states have (on average 1.3012621560107593) internal successors, (25156), 19446 states have internal predecessors, (25156), 9902 states have call successors, (9902), 1938 states have call predecessors, (9902), 1937 states have return successors, (9982), 9807 states have call predecessors, (9982), 9898 states have call successors, (9982) [2021-11-23 01:52:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31174 states to 31174 states and 45040 transitions. [2021-11-23 01:52:23,310 INFO L78 Accepts]: Start accepts. Automaton has 31174 states and 45040 transitions. Word has length 409 [2021-11-23 01:52:23,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:23,311 INFO L470 AbstractCegarLoop]: Abstraction has 31174 states and 45040 transitions. [2021-11-23 01:52:23,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-23 01:52:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 31174 states and 45040 transitions. [2021-11-23 01:52:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-23 01:52:23,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:23,324 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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] [2021-11-23 01:52:23,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:52:23,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:52:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1739878271, now seen corresponding path program 1 times [2021-11-23 01:52:23,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:23,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705175049] [2021-11-23 01:52:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:23,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2021-11-23 01:52:23,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:23,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705175049] [2021-11-23 01:52:23,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705175049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:23,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:23,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:23,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719087258] [2021-11-23 01:52:23,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:23,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:23,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:23,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:23,819 INFO L87 Difference]: Start difference. First operand 31174 states and 45040 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-23 01:52:27,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:29,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:32,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:33,650 INFO L93 Difference]: Finished difference Result 75094 states and 107903 transitions. [2021-11-23 01:52:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:52:33,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 415 [2021-11-23 01:52:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:34,062 INFO L225 Difference]: With dead ends: 75094 [2021-11-23 01:52:34,062 INFO L226 Difference]: Without dead ends: 43993 [2021-11-23 01:52:34,180 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 [2021-11-23 01:52:34,181 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 1589 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 5423 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:34,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 5423 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 954 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2021-11-23 01:52:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43993 states. [2021-11-23 01:52:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43993 to 43944. [2021-11-23 01:52:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43944 states, 27446 states have (on average 1.3022298331268674) internal successors, (35741), 27682 states have internal predecessors, (35741), 13428 states have call successors, (13428), 3068 states have call predecessors, (13428), 3067 states have return successors, (13592), 13209 states have call predecessors, (13592), 13424 states have call successors, (13592) [2021-11-23 01:52:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43944 states to 43944 states and 62761 transitions. [2021-11-23 01:52:36,883 INFO L78 Accepts]: Start accepts. Automaton has 43944 states and 62761 transitions. Word has length 415 [2021-11-23 01:52:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:36,884 INFO L470 AbstractCegarLoop]: Abstraction has 43944 states and 62761 transitions. [2021-11-23 01:52:36,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-23 01:52:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 43944 states and 62761 transitions. [2021-11-23 01:52:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-23 01:52:36,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:36,895 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 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] [2021-11-23 01:52:36,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:52:36,895 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:52:36,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1362348371, now seen corresponding path program 1 times [2021-11-23 01:52:36,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:36,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742782292] [2021-11-23 01:52:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:36,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-23 01:52:37,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:37,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742782292] [2021-11-23 01:52:37,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742782292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:37,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:37,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:52:37,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217696660] [2021-11-23 01:52:37,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:37,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:52:37,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:52:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:52:37,750 INFO L87 Difference]: Start difference. First operand 43944 states and 62761 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 01:52:43,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:45,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:48,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:52:51,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:52:51,569 INFO L93 Difference]: Finished difference Result 83135 states and 121561 transitions. [2021-11-23 01:52:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:52:51,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2021-11-23 01:52:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:52:52,314 INFO L225 Difference]: With dead ends: 83135 [2021-11-23 01:52:52,314 INFO L226 Difference]: Without dead ends: 83133 [2021-11-23 01:52:52,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:52:52,351 INFO L933 BasicCegarLoop]: 3235 mSDtfsCounter, 2833 mSDsluCounter, 10095 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 12037 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-23 01:52:52,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 12037 Invalid, 1751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1745 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2021-11-23 01:52:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83133 states. [2021-11-23 01:52:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83133 to 82719. [2021-11-23 01:52:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82719 states, 51566 states have (on average 1.3033781949346468) internal successors, (67210), 52101 states have internal predecessors, (67210), 25404 states have call successors, (25404), 5779 states have call predecessors, (25404), 5746 states have return successors, (28408), 24870 states have call predecessors, (28408), 25396 states have call successors, (28408) [2021-11-23 01:52:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82719 states to 82719 states and 121022 transitions. [2021-11-23 01:52:57,162 INFO L78 Accepts]: Start accepts. Automaton has 82719 states and 121022 transitions. Word has length 432 [2021-11-23 01:52:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:52:57,189 INFO L470 AbstractCegarLoop]: Abstraction has 82719 states and 121022 transitions. [2021-11-23 01:52:57,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-23 01:52:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 82719 states and 121022 transitions. [2021-11-23 01:52:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-23 01:52:57,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:52:57,201 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 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] [2021-11-23 01:52:57,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 01:52:57,201 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:52:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:52:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash -661814599, now seen corresponding path program 1 times [2021-11-23 01:52:57,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:52:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9881945] [2021-11-23 01:52:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:52:57,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:52:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:52:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5199 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5188 trivial. 0 not checked. [2021-11-23 01:52:57,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:52:57,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9881945] [2021-11-23 01:52:57,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9881945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:52:57,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:52:57,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:52:57,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255044127] [2021-11-23 01:52:57,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:52:57,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:52:57,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:52:57,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:52:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:52:57,631 INFO L87 Difference]: Start difference. First operand 82719 states and 121022 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-23 01:53:03,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:06,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:08,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:11,713 INFO L93 Difference]: Finished difference Result 202435 states and 296063 transitions. [2021-11-23 01:53:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:53:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 431 [2021-11-23 01:53:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:12,829 INFO L225 Difference]: With dead ends: 202435 [2021-11-23 01:53:12,829 INFO L226 Difference]: Without dead ends: 119789 [2021-11-23 01:53:13,278 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 [2021-11-23 01:53:13,279 INFO L933 BasicCegarLoop]: 4627 mSDtfsCounter, 2670 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 7126 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:13,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2677 Valid, 7126 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1230 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2021-11-23 01:53:13,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119789 states. [2021-11-23 01:53:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119789 to 119697. [2021-11-23 01:53:18,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119697 states, 74598 states have (on average 1.3018713638435346) internal successors, (97117), 75384 states have internal predecessors, (97117), 36820 states have call successors, (36820), 8354 states have call predecessors, (36820), 8276 states have return successors, (41053), 36006 states have call predecessors, (41053), 36812 states have call successors, (41053) [2021-11-23 01:53:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119697 states to 119697 states and 174990 transitions. [2021-11-23 01:53:19,421 INFO L78 Accepts]: Start accepts. Automaton has 119697 states and 174990 transitions. Word has length 431 [2021-11-23 01:53:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:53:19,422 INFO L470 AbstractCegarLoop]: Abstraction has 119697 states and 174990 transitions. [2021-11-23 01:53:19,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-23 01:53:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 119697 states and 174990 transitions. [2021-11-23 01:53:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-23 01:53:19,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:53:19,429 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 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] [2021-11-23 01:53:19,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 01:53:19,429 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:53:19,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:53:19,430 INFO L85 PathProgramCache]: Analyzing trace with hash 801776709, now seen corresponding path program 1 times [2021-11-23 01:53:19,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:53:19,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435102992] [2021-11-23 01:53:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:53:19,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:53:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:53:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5376 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-23 01:53:20,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:53:20,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435102992] [2021-11-23 01:53:20,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435102992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:53:20,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:53:20,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:53:20,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841621764] [2021-11-23 01:53:20,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:53:20,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:53:20,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:53:20,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:53:20,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:53:20,431 INFO L87 Difference]: Start difference. First operand 119697 states and 174990 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-23 01:53:26,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:28,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:30,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:53:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:53:37,229 INFO L93 Difference]: Finished difference Result 239174 states and 349709 transitions. [2021-11-23 01:53:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:53:37,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 437 [2021-11-23 01:53:37,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:53:38,462 INFO L225 Difference]: With dead ends: 239174 [2021-11-23 01:53:38,462 INFO L226 Difference]: Without dead ends: 239172 [2021-11-23 01:53:38,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:53:38,559 INFO L933 BasicCegarLoop]: 3156 mSDtfsCounter, 2835 mSDsluCounter, 10003 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2844 SdHoareTripleChecker+Valid, 11856 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-23 01:53:38,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2844 Valid, 11856 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1751 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2021-11-23 01:53:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239172 states.