./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/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_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:50:34,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:50:34,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:50:34,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:50:34,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:50:34,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:50:34,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:50:34,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:50:34,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:50:34,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:50:34,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:50:34,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:50:34,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:50:34,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:50:34,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:50:34,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:50:34,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:50:34,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:50:34,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:50:34,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:50:34,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:50:34,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:50:34,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:50:34,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:50:34,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:50:34,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:50:34,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:50:34,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:50:34,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:50:34,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:50:34,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:50:34,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:50:34,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:50:34,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:50:34,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:50:34,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:50:34,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:50:34,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:50:34,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:50:34,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:50:34,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:50:34,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:50:34,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:50:34,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:50:34,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:50:34,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:50:34,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:50:34,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:50:34,195 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:50:34,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:50:34,196 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:50:34,196 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:50:34,196 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:50:34,196 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:50:34,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:50:34,197 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:50:34,197 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:50:34,197 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:50:34,197 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:50:34,198 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:50:34,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:50:34,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:50:34,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:50:34,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:50:34,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:50:34,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:50:34,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:50:34,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:50:34,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:50:34,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:50:34,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:50:34,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:34,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:50:34,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:50:34,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:50:34,202 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:50:34,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:50:34,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:50:34,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:50:34,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:50:34,203 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_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08fd1f25b7d22203947cf6c4ad8cac3aedaa56ca5536c5ddc05b18633d46ecf5 [2021-11-25 17:50:34,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:50:34,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:50:34,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:50:34,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:50:34,536 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:50:34,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 17:50:34,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/data/3545addee/0be85e258da04812a360198cb60d07a8/FLAG43fa01803 [2021-11-25 17:50:35,801 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:50:35,801 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 17:50:35,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/data/3545addee/0be85e258da04812a360198cb60d07a8/FLAG43fa01803 [2021-11-25 17:50:36,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/data/3545addee/0be85e258da04812a360198cb60d07a8 [2021-11-25 17:50:36,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:50:36,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:50:36,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:36,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:50:36,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:50:36,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:36" (1/1) ... [2021-11-25 17:50:36,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ac5d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:36, skipping insertion in model container [2021-11-25 17:50:36,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:50:36" (1/1) ... [2021-11-25 17:50:36,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:50:36,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:50:40,713 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_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470736,470749] [2021-11-25 17:50:40,718 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_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470902,470915] [2021-11-25 17:50:40,719 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_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471066,471079] [2021-11-25 17:50:40,719 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_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471231,471244] [2021-11-25 17:50:40,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:40,867 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:50:41,531 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_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470736,470749] [2021-11-25 17:50:41,532 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_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470902,470915] [2021-11-25 17:50:41,532 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_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471066,471079] [2021-11-25 17:50:41,533 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_993945de-1aec-4d0d-8f8b-1bd42d783673/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471231,471244] [2021-11-25 17:50:41,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:50:41,859 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:50:41,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41 WrapperNode [2021-11-25 17:50:41,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:50:41,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:41,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:50:41,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:50:41,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,485 INFO L137 Inliner]: procedures = 410, calls = 4510, calls flagged for inlining = 226, calls inlined = 200, statements flattened = 9274 [2021-11-25 17:50:42,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:50:42,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:50:42,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:50:42,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:50:42,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:50:42,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:50:42,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:50:42,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:50:42,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (1/1) ... [2021-11-25 17:50:42,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:42,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:42,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:50:43,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993945de-1aec-4d0d-8f8b-1bd42d783673/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:50:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-25 17:50:43,044 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-25 17:50:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-25 17:50:43,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-25 17:50:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-25 17:50:43,044 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-25 17:50:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-25 17:50:43,045 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-25 17:50:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 17:50:43,046 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 17:50:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-25 17:50:43,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-25 17:50:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-25 17:50:43,046 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-25 17:50:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 17:50:43,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 17:50:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-25 17:50:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-25 17:50:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-25 17:50:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-25 17:50:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-25 17:50:43,047 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-25 17:50:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-25 17:50:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-25 17:50:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-25 17:50:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-25 17:50:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-25 17:50:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-25 17:50:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-25 17:50:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-25 17:50:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 17:50:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 17:50:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-25 17:50:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-25 17:50:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 17:50:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 17:50:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 17:50:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 17:50:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 17:50:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 17:50:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:50:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-25 17:50:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-25 17:50:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-25 17:50:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-25 17:50:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-25 17:50:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-25 17:50:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-25 17:50:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-25 17:50:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 17:50:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 17:50:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-25 17:50:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-25 17:50:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-25 17:50:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-25 17:50:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-25 17:50:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-25 17:50:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-25 17:50:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-25 17:50:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 17:50:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-25 17:50:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-25 17:50:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-25 17:50:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-25 17:50:43,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 17:50:43,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 17:50:43,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 17:50:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-25 17:50:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-25 17:50:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-25 17:50:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-25 17:50:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:50:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-25 17:50:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-25 17:50:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 17:50:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 17:50:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 17:50:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 17:50:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-25 17:50:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-25 17:50:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_command_lock_of_rndis_wlan_private [2021-11-25 17:50:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_command_lock_of_rndis_wlan_private [2021-11-25 17:50:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-25 17:50:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-25 17:50:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-25 17:50:43,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-25 17:50:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:50:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-25 17:50:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-25 17:50:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-25 17:50:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-25 17:50:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 17:50:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 17:50:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-25 17:50:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-25 17:50:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 17:50:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 17:50:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:50:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-25 17:50:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-25 17:50:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 17:50:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 17:50:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-25 17:50:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-25 17:50:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:50:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-25 17:50:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-25 17:50:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-25 17:50:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-25 17:50:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 17:50:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 17:50:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-25 17:50:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-25 17:50:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-25 17:50:43,074 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-25 17:50:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 17:50:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 17:50:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-25 17:50:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-25 17:50:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-25 17:50:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-25 17:50:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 17:50:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 17:50:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:50:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:50:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 17:50:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 17:50:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 17:50:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 17:50:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 17:50:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 17:50:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 17:50:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 17:50:43,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-25 17:50:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-25 17:50:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 17:50:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 17:50:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-25 17:50:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-25 17:50:43,083 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 17:50:43,083 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 17:50:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-25 17:50:43,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-25 17:50:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 17:50:43,084 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 17:50:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-25 17:50:43,084 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-25 17:50:43,084 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-25 17:50:43,084 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-25 17:50:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-25 17:50:43,085 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-25 17:50:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-25 17:50:43,085 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-25 17:50:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 17:50:43,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 17:50:43,085 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 17:50:43,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 17:50:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 17:50:43,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 17:50:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:50:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 17:50:43,086 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 17:50:43,086 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-25 17:50:43,086 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-25 17:50:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:50:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-25 17:50:43,087 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-25 17:50:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-25 17:50:43,087 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-25 17:50:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-25 17:50:43,087 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-25 17:50:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 17:50:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 17:50:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:50:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-25 17:50:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-25 17:50:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 17:50:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 17:50:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-25 17:50:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-25 17:50:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 17:50:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 17:50:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-25 17:50:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-25 17:50:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 17:50:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 17:50:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 17:50:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 17:50:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-25 17:50:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-25 17:50:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-25 17:50:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-25 17:50:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 17:50:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 17:50:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-25 17:50:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-25 17:50:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 17:50:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 17:50:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-25 17:50:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-25 17:50:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-25 17:50:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-25 17:50:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 17:50:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 17:50:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 17:50:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 17:50:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-25 17:50:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-25 17:50:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-25 17:50:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-25 17:50:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-25 17:50:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-25 17:50:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:50:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-25 17:50:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-25 17:50:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 17:50:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 17:50:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_command_lock_of_rndis_wlan_private [2021-11-25 17:50:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_command_lock_of_rndis_wlan_private [2021-11-25 17:50:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-25 17:50:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-25 17:50:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-25 17:50:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-25 17:50:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 17:50:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 17:50:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-25 17:50:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-25 17:50:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 17:50:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 17:50:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 17:50:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 17:50:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-25 17:50:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-25 17:50:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-25 17:50:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-25 17:50:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-25 17:50:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-25 17:50:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-25 17:50:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-25 17:50:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-25 17:50:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-25 17:50:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 17:50:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:50:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-25 17:50:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-25 17:50:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-25 17:50:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-25 17:50:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 17:50:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 17:50:44,574 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:50:44,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:50:45,167 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 17:51:07,846 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 17:51:08,144 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:51:09,934 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:51:09,934 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:51:09,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:09 BoogieIcfgContainer [2021-11-25 17:51:09,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:51:09,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:51:09,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:51:09,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:51:09,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:50:36" (1/3) ... [2021-11-25 17:51:09,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cf4487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:09, skipping insertion in model container [2021-11-25 17:51:09,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:50:41" (2/3) ... [2021-11-25 17:51:09,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cf4487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:09, skipping insertion in model container [2021-11-25 17:51:09,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:09" (3/3) ... [2021-11-25 17:51:09,961 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 17:51:09,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:51:09,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 17:51:10,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:51:10,066 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 [2021-11-25 17:51:10,071 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 17:51:10,162 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) [2021-11-25 17:51:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-25 17:51:10,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:10,229 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] [2021-11-25 17:51:10,229 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)] === [2021-11-25 17:51:10,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:10,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1717882288, now seen corresponding path program 1 times [2021-11-25 17:51:10,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731739467] [2021-11-25 17:51:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:10,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-25 17:51:11,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:11,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731739467] [2021-11-25 17:51:11,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731739467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:11,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:11,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:11,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299051825] [2021-11-25 17:51:11,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:11,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:11,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:11,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:11,482 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) [2021-11-25 17:51:15,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:17,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:19,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:21,625 INFO L93 Difference]: Finished difference Result 5872 states and 8877 transitions. [2021-11-25 17:51:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:21,628 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 [2021-11-25 17:51:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:21,699 INFO L225 Difference]: With dead ends: 5872 [2021-11-25 17:51:21,700 INFO L226 Difference]: Without dead ends: 3899 [2021-11-25 17:51:21,731 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 [2021-11-25 17:51:21,737 INFO L933 BasicCegarLoop]: 3194 mSDtfsCounter, 2767 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s 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, 9.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:21,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2774 Valid, 5676 Invalid, 926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 910 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2021-11-25 17:51:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-11-25 17:51:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3895. [2021-11-25 17:51:22,154 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) [2021-11-25 17:51:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 5684 transitions. [2021-11-25 17:51:22,214 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 5684 transitions. Word has length 384 [2021-11-25 17:51:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:22,222 INFO L470 AbstractCegarLoop]: Abstraction has 3895 states and 5684 transitions. [2021-11-25 17:51:22,222 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) [2021-11-25 17:51:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 5684 transitions. [2021-11-25 17:51:22,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-11-25 17:51:22,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:22,248 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] [2021-11-25 17:51:22,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:51:22,248 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)] === [2021-11-25 17:51:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash -255544321, now seen corresponding path program 1 times [2021-11-25 17:51:22,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:22,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594089536] [2021-11-25 17:51:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:22,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-25 17:51:23,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:23,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594089536] [2021-11-25 17:51:23,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594089536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:23,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:23,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:23,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552110857] [2021-11-25 17:51:23,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:23,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:23,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:23,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:23,255 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) [2021-11-25 17:51:26,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:29,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:31,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:33,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:33,577 INFO L93 Difference]: Finished difference Result 9562 states and 13936 transitions. [2021-11-25 17:51:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:33,578 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 [2021-11-25 17:51:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:33,641 INFO L225 Difference]: With dead ends: 9562 [2021-11-25 17:51:33,641 INFO L226 Difference]: Without dead ends: 5740 [2021-11-25 17:51:33,668 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 [2021-11-25 17:51:33,669 INFO L933 BasicCegarLoop]: 3174 mSDtfsCounter, 2725 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s 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, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:33,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2732 Valid, 5651 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 17:51:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2021-11-25 17:51:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5721. [2021-11-25 17:51:34,058 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) [2021-11-25 17:51:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 8322 transitions. [2021-11-25 17:51:34,103 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 8322 transitions. Word has length 403 [2021-11-25 17:51:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:34,106 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 8322 transitions. [2021-11-25 17:51:34,107 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) [2021-11-25 17:51:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 8322 transitions. [2021-11-25 17:51:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-25 17:51:34,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:34,122 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] [2021-11-25 17:51:34,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:51:34,123 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)] === [2021-11-25 17:51:34,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash -829006890, now seen corresponding path program 1 times [2021-11-25 17:51:34,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:34,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954799322] [2021-11-25 17:51:34,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:34,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-25 17:51:34,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954799322] [2021-11-25 17:51:34,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954799322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:34,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:34,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:34,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492816978] [2021-11-25 17:51:34,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:34,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:34,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:34,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:34,642 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) [2021-11-25 17:51:37,938 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 [] [2021-11-25 17:51:40,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:42,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:44,937 INFO L93 Difference]: Finished difference Result 15040 states and 21860 transitions. [2021-11-25 17:51:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:44,938 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 [2021-11-25 17:51:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:45,047 INFO L225 Difference]: With dead ends: 15040 [2021-11-25 17:51:45,047 INFO L226 Difference]: Without dead ends: 9392 [2021-11-25 17:51:45,092 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 [2021-11-25 17:51:45,097 INFO L933 BasicCegarLoop]: 3213 mSDtfsCounter, 2726 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s 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, 9.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:45,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2733 Valid, 5690 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 924 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2021-11-25 17:51:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9392 states. [2021-11-25 17:51:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9392 to 9373. [2021-11-25 17:51:45,860 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) [2021-11-25 17:51:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9373 states to 9373 states and 13598 transitions. [2021-11-25 17:51:45,933 INFO L78 Accepts]: Start accepts. Automaton has 9373 states and 13598 transitions. Word has length 402 [2021-11-25 17:51:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:45,935 INFO L470 AbstractCegarLoop]: Abstraction has 9373 states and 13598 transitions. [2021-11-25 17:51:45,936 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) [2021-11-25 17:51:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 9373 states and 13598 transitions. [2021-11-25 17:51:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-25 17:51:45,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:45,955 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] [2021-11-25 17:51:45,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:51:45,955 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)] === [2021-11-25 17:51:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1920327043, now seen corresponding path program 1 times [2021-11-25 17:51:45,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:45,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393340490] [2021-11-25 17:51:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:45,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-25 17:51:46,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:46,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393340490] [2021-11-25 17:51:46,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393340490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:46,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:46,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:46,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735292545] [2021-11-25 17:51:46,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:46,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:46,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:46,679 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) [2021-11-25 17:51:49,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:52,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:54,882 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 [] [2021-11-25 17:51:56,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:56,627 INFO L93 Difference]: Finished difference Result 25583 states and 37111 transitions. [2021-11-25 17:51:56,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:51:56,628 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 [2021-11-25 17:51:56,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:56,789 INFO L225 Difference]: With dead ends: 25583 [2021-11-25 17:51:56,790 INFO L226 Difference]: Without dead ends: 16283 [2021-11-25 17:51:56,862 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 [2021-11-25 17:51:56,863 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, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:56,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2731 Valid, 5908 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 993 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 17:51:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16283 states. [2021-11-25 17:51:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16283 to 16264. [2021-11-25 17:51:58,019 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) [2021-11-25 17:51:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16264 states to 16264 states and 23553 transitions. [2021-11-25 17:51:58,122 INFO L78 Accepts]: Start accepts. Automaton has 16264 states and 23553 transitions. Word has length 404 [2021-11-25 17:51:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:58,125 INFO L470 AbstractCegarLoop]: Abstraction has 16264 states and 23553 transitions. [2021-11-25 17:51:58,125 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) [2021-11-25 17:51:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 16264 states and 23553 transitions. [2021-11-25 17:51:58,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-25 17:51:58,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:58,138 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] [2021-11-25 17:51:58,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:51:58,139 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)] === [2021-11-25 17:51:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash -180409085, now seen corresponding path program 1 times [2021-11-25 17:51:58,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:58,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060010102] [2021-11-25 17:51:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:58,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2021-11-25 17:51:58,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:58,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060010102] [2021-11-25 17:51:58,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060010102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:58,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:58,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:51:58,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75495974] [2021-11-25 17:51:58,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:58,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:51:58,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:51:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:51:58,653 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) [2021-11-25 17:52:02,456 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 [] [2021-11-25 17:52:05,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:07,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:09,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:09,288 INFO L93 Difference]: Finished difference Result 47400 states and 68618 transitions. [2021-11-25 17:52:09,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:09,289 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 [2021-11-25 17:52:09,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:09,513 INFO L225 Difference]: With dead ends: 47400 [2021-11-25 17:52:09,513 INFO L226 Difference]: Without dead ends: 31209 [2021-11-25 17:52:09,597 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 [2021-11-25 17:52:09,598 INFO L933 BasicCegarLoop]: 3811 mSDtfsCounter, 2673 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s 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, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:09,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2680 Valid, 6292 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1082 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 17:52:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31209 states. [2021-11-25 17:52:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31209 to 31174. [2021-11-25 17:52:11,907 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) [2021-11-25 17:52:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31174 states to 31174 states and 45040 transitions. [2021-11-25 17:52:12,114 INFO L78 Accepts]: Start accepts. Automaton has 31174 states and 45040 transitions. Word has length 409 [2021-11-25 17:52:12,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:12,115 INFO L470 AbstractCegarLoop]: Abstraction has 31174 states and 45040 transitions. [2021-11-25 17:52:12,116 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) [2021-11-25 17:52:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 31174 states and 45040 transitions. [2021-11-25 17:52:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-25 17:52:12,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:12,130 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] [2021-11-25 17:52:12,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:52:12,131 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)] === [2021-11-25 17:52:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1739878271, now seen corresponding path program 1 times [2021-11-25 17:52:12,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078186223] [2021-11-25 17:52:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:12,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2021-11-25 17:52:12,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:12,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078186223] [2021-11-25 17:52:12,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078186223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:12,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:12,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:12,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410560080] [2021-11-25 17:52:12,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:12,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:12,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:12,598 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) [2021-11-25 17:52:16,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:18,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:22,072 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 [] [2021-11-25 17:52:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:23,393 INFO L93 Difference]: Finished difference Result 75094 states and 107903 transitions. [2021-11-25 17:52:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:23,394 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 [2021-11-25 17:52:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:23,724 INFO L225 Difference]: With dead ends: 75094 [2021-11-25 17:52:23,724 INFO L226 Difference]: Without dead ends: 43993 [2021-11-25 17:52:24,055 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 [2021-11-25 17:52:24,057 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 1589 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s 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, 9.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:24,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 5423 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 954 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-25 17:52:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43993 states. [2021-11-25 17:52:26,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43993 to 43944. [2021-11-25 17:52:26,607 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) [2021-11-25 17:52:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43944 states to 43944 states and 62761 transitions. [2021-11-25 17:52:27,109 INFO L78 Accepts]: Start accepts. Automaton has 43944 states and 62761 transitions. Word has length 415 [2021-11-25 17:52:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:27,110 INFO L470 AbstractCegarLoop]: Abstraction has 43944 states and 62761 transitions. [2021-11-25 17:52:27,111 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) [2021-11-25 17:52:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 43944 states and 62761 transitions. [2021-11-25 17:52:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-25 17:52:27,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:27,123 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] [2021-11-25 17:52:27,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:52:27,124 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)] === [2021-11-25 17:52:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1362348371, now seen corresponding path program 1 times [2021-11-25 17:52:27,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:27,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243832241] [2021-11-25 17:52:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:27,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-25 17:52:28,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:28,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243832241] [2021-11-25 17:52:28,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243832241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:28,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:28,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:52:28,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294867268] [2021-11-25 17:52:28,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:28,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:52:28,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:52:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:52:28,068 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) [2021-11-25 17:52:32,947 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 [] [2021-11-25 17:52:35,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:38,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:41,748 INFO L93 Difference]: Finished difference Result 83135 states and 121561 transitions. [2021-11-25 17:52:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:52:41,749 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 [2021-11-25 17:52:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:42,412 INFO L225 Difference]: With dead ends: 83135 [2021-11-25 17:52:42,413 INFO L226 Difference]: Without dead ends: 83133 [2021-11-25 17:52:42,455 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 [2021-11-25 17:52:42,456 INFO L933 BasicCegarLoop]: 3238 mSDtfsCounter, 2833 mSDsluCounter, 10101 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 12046 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:42,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 12046 Invalid, 1751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1745 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time] [2021-11-25 17:52:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83133 states. [2021-11-25 17:52:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83133 to 82719. [2021-11-25 17:52:46,797 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) [2021-11-25 17:52:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82719 states to 82719 states and 121022 transitions. [2021-11-25 17:52:47,469 INFO L78 Accepts]: Start accepts. Automaton has 82719 states and 121022 transitions. Word has length 432 [2021-11-25 17:52:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:47,470 INFO L470 AbstractCegarLoop]: Abstraction has 82719 states and 121022 transitions. [2021-11-25 17:52:47,471 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) [2021-11-25 17:52:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 82719 states and 121022 transitions. [2021-11-25 17:52:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-25 17:52:47,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:47,480 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] [2021-11-25 17:52:47,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:52:47,481 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)] === [2021-11-25 17:52:47,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:47,482 INFO L85 PathProgramCache]: Analyzing trace with hash -661814599, now seen corresponding path program 1 times [2021-11-25 17:52:47,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:47,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691494795] [2021-11-25 17:52:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:47,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5199 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5188 trivial. 0 not checked. [2021-11-25 17:52:48,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:48,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691494795] [2021-11-25 17:52:48,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691494795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:48,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:48,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:48,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888191590] [2021-11-25 17:52:48,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:48,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:48,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:48,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:48,468 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) [2021-11-25 17:52:54,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:56,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:58,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:02,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:02,340 INFO L93 Difference]: Finished difference Result 202435 states and 296063 transitions. [2021-11-25 17:53:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:53:02,341 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 [2021-11-25 17:53:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:03,303 INFO L225 Difference]: With dead ends: 202435 [2021-11-25 17:53:03,303 INFO L226 Difference]: Without dead ends: 119789 [2021-11-25 17:53:03,603 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 [2021-11-25 17:53:03,603 INFO L933 BasicCegarLoop]: 4627 mSDtfsCounter, 2670 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s 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, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:03,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2677 Valid, 7126 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1230 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 17:53:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119789 states. [2021-11-25 17:53:08,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119789 to 119697. [2021-11-25 17:53:08,175 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) [2021-11-25 17:53:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119697 states to 119697 states and 174990 transitions. [2021-11-25 17:53:09,396 INFO L78 Accepts]: Start accepts. Automaton has 119697 states and 174990 transitions. Word has length 431 [2021-11-25 17:53:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:09,397 INFO L470 AbstractCegarLoop]: Abstraction has 119697 states and 174990 transitions. [2021-11-25 17:53:09,397 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) [2021-11-25 17:53:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 119697 states and 174990 transitions. [2021-11-25 17:53:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-25 17:53:09,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:09,404 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] [2021-11-25 17:53:09,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:53:09,405 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)] === [2021-11-25 17:53:09,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:09,406 INFO L85 PathProgramCache]: Analyzing trace with hash 801776709, now seen corresponding path program 1 times [2021-11-25 17:53:09,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:09,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225484391] [2021-11-25 17:53:09,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:09,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5376 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-25 17:53:09,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:09,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225484391] [2021-11-25 17:53:09,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225484391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:09,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:09,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:53:09,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752504585] [2021-11-25 17:53:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:09,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:53:09,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:53:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:53:09,964 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) [2021-11-25 17:53:15,246 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 [] [2021-11-25 17:53:18,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:20,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:25,798 INFO L93 Difference]: Finished difference Result 239174 states and 349709 transitions. [2021-11-25 17:53:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:53:25,799 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 [2021-11-25 17:53:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:27,174 INFO L225 Difference]: With dead ends: 239174 [2021-11-25 17:53:27,174 INFO L226 Difference]: Without dead ends: 239172 [2021-11-25 17:53:27,248 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 [2021-11-25 17:53:27,249 INFO L933 BasicCegarLoop]: 3156 mSDtfsCounter, 2835 mSDsluCounter, 10003 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s 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, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:27,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2844 Valid, 11856 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1751 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 17:53:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239172 states.