./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.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_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/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_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/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_4da43225-e349-4e00-b06f-03834858cc59/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 a3d1583250bab7d5c6e3cae163663e7ac3704cf0fb6c32d7f6b8a0a0c30f1a49 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:07:13,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:07:13,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:07:13,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:07:13,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:07:13,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:07:13,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:07:13,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:07:13,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:07:13,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:07:13,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:07:13,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:07:13,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:07:13,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:07:13,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:07:13,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:07:13,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:07:13,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:07:13,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:07:13,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:07:13,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:07:13,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:07:13,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:07:13,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:07:13,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:07:13,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:07:13,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:07:13,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:07:13,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:07:13,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:07:13,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:07:13,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:07:13,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:07:13,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:07:13,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:07:13,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:07:13,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:07:13,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:07:13,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:07:13,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:07:13,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:07:13,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:07:13,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:07:13,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:07:13,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:07:13,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:07:13,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:07:13,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:07:13,193 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:07:13,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:07:13,194 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:07:13,194 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:07:13,194 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:07:13,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:07:13,194 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:07:13,195 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:07:13,195 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:07:13,195 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:07:13,195 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:07:13,195 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:07:13,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:07:13,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:07:13,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:07:13,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:07:13,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:07:13,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:07:13,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:07:13,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:07:13,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:07:13,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:07:13,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:07:13,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:07:13,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:07:13,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:07:13,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:07:13,199 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:07:13,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:07:13,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:07:13,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:07:13,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:07:13,200 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_4da43225-e349-4e00-b06f-03834858cc59/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3d1583250bab7d5c6e3cae163663e7ac3704cf0fb6c32d7f6b8a0a0c30f1a49 [2021-11-25 20:07:13,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:07:13,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:07:13,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:07:13,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:07:13,458 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:07:13,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 20:07:13,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/data/38cf4f6d9/d38a9262bb0047bca030f030b9c6fe24/FLAGa77aa212f [2021-11-25 20:07:14,678 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:07:14,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 20:07:14,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/data/38cf4f6d9/d38a9262bb0047bca030f030b9c6fe24/FLAGa77aa212f [2021-11-25 20:07:14,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/data/38cf4f6d9/d38a9262bb0047bca030f030b9c6fe24 [2021-11-25 20:07:14,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:07:14,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:07:14,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:07:14,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:07:14,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:07:14,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:07:14" (1/1) ... [2021-11-25 20:07:14,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e71596c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:14, skipping insertion in model container [2021-11-25 20:07:14,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:07:14" (1/1) ... [2021-11-25 20:07:14,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:07:15,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:07:22,563 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_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752340,752353] [2021-11-25 20:07:22,566 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_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752506,752519] [2021-11-25 20:07:22,566 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_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752670,752683] [2021-11-25 20:07:22,567 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_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752835,752848] [2021-11-25 20:07:22,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:07:22,669 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:07:23,575 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_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752340,752353] [2021-11-25 20:07:23,576 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_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752506,752519] [2021-11-25 20:07:23,576 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_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752670,752683] [2021-11-25 20:07:23,576 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_4da43225-e349-4e00-b06f-03834858cc59/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[752835,752848] [2021-11-25 20:07:23,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:07:23,920 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:07:23,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23 WrapperNode [2021-11-25 20:07:23,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:07:23,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:07:23,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:07:23,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:07:23,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:24,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:24,652 INFO L137 Inliner]: procedures = 660, calls = 11540, calls flagged for inlining = 344, calls inlined = 236, statements flattened = 12774 [2021-11-25 20:07:24,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:07:24,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:07:24,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:07:24,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:07:24,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:24,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:24,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:24,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:25,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:25,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:25,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:25,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:07:25,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:07:25,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:07:25,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:07:25,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (1/1) ... [2021-11-25 20:07:25,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:07:25,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:07:25,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:07:25,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:07:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:07:25,551 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:07:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:07:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:07:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-25 20:07:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-25 20:07:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-25 20:07:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-25 20:07:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-25 20:07:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-25 20:07:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:07:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:07:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:07:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:07:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-25 20:07:25,553 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-25 20:07:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-25 20:07:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-25 20:07:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-25 20:07:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-25 20:07:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:07:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:07:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 20:07:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 20:07:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-25 20:07:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-25 20:07:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-25 20:07:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-25 20:07:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 20:07:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 20:07:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:07:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:07:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:07:25,556 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:07:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:07:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:07:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:07:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:07:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:07:25,557 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:07:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-25 20:07:25,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-25 20:07:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:07:25,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:07:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 20:07:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 20:07:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 20:07:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 20:07:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-25 20:07:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-25 20:07:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-25 20:07:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-25 20:07:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-25 20:07:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-25 20:07:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:07:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:07:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:07:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-25 20:07:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-25 20:07:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 20:07:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 20:07:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-25 20:07:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-25 20:07:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 20:07:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 20:07:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-25 20:07:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-25 20:07:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-25 20:07:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-25 20:07:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:07:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:07:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-25 20:07:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-25 20:07:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:07:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:07:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-25 20:07:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-25 20:07:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:07:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:07:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:07:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 20:07:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 20:07:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:07:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-25 20:07:25,568 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-25 20:07:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:07:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:07:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-25 20:07:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-25 20:07:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:07:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:07:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:07:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-25 20:07:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-25 20:07:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-25 20:07:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-25 20:07:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:07:25,570 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:07:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:07:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:07:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:07:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:07:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:07:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:07:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 20:07:25,573 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 20:07:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:07:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:07:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-25 20:07:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-25 20:07:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:07:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:07:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2021-11-25 20:07:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2021-11-25 20:07:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-25 20:07:25,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-25 20:07:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-25 20:07:25,583 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-25 20:07:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-25 20:07:25,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-25 20:07:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:07:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:07:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-25 20:07:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-25 20:07:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:07:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:07:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-25 20:07:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-25 20:07:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:07:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:07:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:07:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 20:07:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 20:07:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 20:07:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-25 20:07:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-25 20:07:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:07:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:07:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-25 20:07:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-25 20:07:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:07:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:07:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-25 20:07:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-25 20:07:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 20:07:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 20:07:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:07:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:07:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-25 20:07:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-25 20:07:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-25 20:07:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-25 20:07:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 20:07:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 20:07:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-25 20:07:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-25 20:07:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-25 20:07:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-25 20:07:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:07:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:07:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-25 20:07:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-25 20:07:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-25 20:07:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-25 20:07:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-25 20:07:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-25 20:07:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 20:07:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 20:07:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:07:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:07:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:07:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:07:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-25 20:07:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-25 20:07:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 20:07:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 20:07:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-25 20:07:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-25 20:07:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-25 20:07:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-25 20:07:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-25 20:07:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-25 20:07:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-25 20:07:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-25 20:07:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 20:07:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 20:07:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-25 20:07:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-25 20:07:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2021-11-25 20:07:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2021-11-25 20:07:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-25 20:07:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-25 20:07:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-25 20:07:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-25 20:07:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-25 20:07:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-25 20:07:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:07:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:07:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-25 20:07:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-25 20:07:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-25 20:07:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-25 20:07:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:07:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:07:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:07:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:07:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:07:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:07:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-25 20:07:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-25 20:07:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 20:07:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 20:07:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 20:07:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 20:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:07:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 20:07:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 20:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-25 20:07:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-25 20:07:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:07:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-25 20:07:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-25 20:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-25 20:07:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-25 20:07:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-25 20:07:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-25 20:07:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-25 20:07:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-25 20:07:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-25 20:07:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-25 20:07:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-25 20:07:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-25 20:07:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 20:07:25,603 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 20:07:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:07:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-25 20:07:25,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-25 20:07:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 20:07:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 20:07:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 20:07:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 20:07:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-25 20:07:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-25 20:07:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-25 20:07:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-25 20:07:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:07:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:07:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-25 20:07:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-25 20:07:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:07:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:07:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 20:07:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 20:07:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:07:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:07:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-25 20:07:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-25 20:07:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-25 20:07:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-25 20:07:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-25 20:07:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-25 20:07:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-25 20:07:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-25 20:07:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-25 20:07:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-25 20:07:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 20:07:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 20:07:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 20:07:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 20:07:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 20:07:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 20:07:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:07:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:07:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-25 20:07:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-25 20:07:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-25 20:07:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-25 20:07:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-25 20:07:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-25 20:07:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-25 20:07:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-25 20:07:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:07:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:07:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 20:07:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 20:07:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:07:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-25 20:07:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-25 20:07:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:07:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:07:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-25 20:07:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-25 20:07:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-25 20:07:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-25 20:07:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 20:07:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 20:07:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-25 20:07:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-25 20:07:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 20:07:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 20:07:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-25 20:07:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-25 20:07:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 20:07:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 20:07:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 20:07:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 20:07:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-25 20:07:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-25 20:07:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2021-11-25 20:07:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2021-11-25 20:07:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2021-11-25 20:07:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2021-11-25 20:07:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:07:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:07:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 20:07:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 20:07:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 20:07:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 20:07:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 20:07:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 20:07:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 20:07:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 20:07:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-25 20:07:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-25 20:07:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 20:07:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 20:07:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-25 20:07:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-25 20:07:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 20:07:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-25 20:07:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-25 20:07:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-25 20:07:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-25 20:07:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:07:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-25 20:07:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-25 20:07:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-25 20:07:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-25 20:07:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:07:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 20:07:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 20:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-25 20:07:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-25 20:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-25 20:07:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-25 20:07:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-25 20:07:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-25 20:07:27,046 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:07:27,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:07:41,239 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:09:55,021 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:09:59,346 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:09:59,346 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:09:59,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:09:59 BoogieIcfgContainer [2021-11-25 20:09:59,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:09:59,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:09:59,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:09:59,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:09:59,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:07:14" (1/3) ... [2021-11-25 20:09:59,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc1bc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:09:59, skipping insertion in model container [2021-11-25 20:09:59,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:23" (2/3) ... [2021-11-25 20:09:59,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc1bc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:09:59, skipping insertion in model container [2021-11-25 20:09:59,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:09:59" (3/3) ... [2021-11-25 20:09:59,364 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 20:09:59,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:09:59,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:09:59,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:09:59,457 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 20:09:59,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:09:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 2665 states, 1654 states have (on average 1.3162031438935913) internal successors, (2177), 1680 states have internal predecessors, (2177), 841 states have call successors, (841), 167 states have call predecessors, (841), 166 states have return successors, (837), 836 states have call predecessors, (837), 837 states have call successors, (837) [2021-11-25 20:09:59,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 20:09:59,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:59,548 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:09:59,549 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 20:09:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash 313106682, now seen corresponding path program 1 times [2021-11-25 20:09:59,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:59,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792314751] [2021-11-25 20:09:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:59,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:10:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:10:00,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:10:00,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792314751] [2021-11-25 20:10:00,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792314751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:10:00,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:10:00,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:10:00,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095704716] [2021-11-25 20:10:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:10:00,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:10:00,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:10:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:10:01,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:10:01,009 INFO L87 Difference]: Start difference. First operand has 2665 states, 1654 states have (on average 1.3162031438935913) internal successors, (2177), 1680 states have internal predecessors, (2177), 841 states have call successors, (841), 167 states have call predecessors, (841), 166 states have return successors, (837), 836 states have call predecessors, (837), 837 states have call successors, (837) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 20:10:05,510 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 20:10:07,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:10:11,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:10:14,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:10:17,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:10:20,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:10:24,047 WARN L534 Checker$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 20:10:26,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:10:28,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:10:37,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:10:39,868 WARN L534 Checker$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 20:10:43,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:10:46,432 WARN L534 Checker$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 20:10:49,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:10:52,032 WARN L534 Checker$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 20:10:54,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:10:56,750 WARN L534 Checker$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 20:10:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:10:58,110 INFO L93 Difference]: Finished difference Result 7370 states and 10753 transitions. [2021-11-25 20:10:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:10:58,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-25 20:10:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:10:58,186 INFO L225 Difference]: With dead ends: 7370 [2021-11-25 20:10:58,186 INFO L226 Difference]: Without dead ends: 4708 [2021-11-25 20:10:58,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:10:58,214 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 3087 mSDsluCounter, 14182 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 4 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 17408 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:10:58,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3094 Valid, 17408 Invalid, 2056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 2038 Invalid, 14 Unknown, 0 Unchecked, 56.4s Time] [2021-11-25 20:10:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2021-11-25 20:10:58,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4697. [2021-11-25 20:10:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4697 states, 2909 states have (on average 1.3104159504984532) internal successors, (3812), 2960 states have internal predecessors, (3812), 1478 states have call successors, (1478), 311 states have call predecessors, (1478), 307 states have return successors, (1474), 1461 states have call predecessors, (1474), 1472 states have call successors, (1474) [2021-11-25 20:10:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 6764 transitions. [2021-11-25 20:10:58,635 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 6764 transitions. Word has length 35 [2021-11-25 20:10:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:10:58,636 INFO L470 AbstractCegarLoop]: Abstraction has 4697 states and 6764 transitions. [2021-11-25 20:10:58,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 20:10:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 6764 transitions. [2021-11-25 20:10:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 20:10:58,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:10:58,639 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:10:58,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:10:58,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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 20:10:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:10:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1527879333, now seen corresponding path program 1 times [2021-11-25 20:10:58,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:10:58,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10943547] [2021-11-25 20:10:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:58,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:10:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:10:59,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:10:59,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10943547] [2021-11-25 20:10:59,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10943547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:10:59,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:10:59,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:10:59,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347613566] [2021-11-25 20:10:59,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:10:59,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:10:59,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:10:59,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:10:59,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:10:59,561 INFO L87 Difference]: Start difference. First operand 4697 states and 6764 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:11:03,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:11:05,853 WARN L534 Checker$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 20:11:12,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:11:14,933 WARN L534 Checker$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 20:11:25,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:11:28,646 WARN L534 Checker$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 20:11:31,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:11:34,896 WARN L534 Checker$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 20:11:37,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:11:39,625 WARN L534 Checker$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 20:11:42,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:11:44,542 WARN L534 Checker$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 20:11:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:46,102 INFO L93 Difference]: Finished difference Result 9076 states and 13126 transitions. [2021-11-25 20:11:46,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:11:46,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2021-11-25 20:11:46,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:46,186 INFO L225 Difference]: With dead ends: 9076 [2021-11-25 20:11:46,186 INFO L226 Difference]: Without dead ends: 9074 [2021-11-25 20:11:46,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:11:46,199 INFO L933 BasicCegarLoop]: 4551 mSDtfsCounter, 3496 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 3 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 17018 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:46,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3502 Valid, 17018 Invalid, 1870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1855 Invalid, 12 Unknown, 0 Unchecked, 46.0s Time] [2021-11-25 20:11:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2021-11-25 20:11:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 9050. [2021-11-25 20:11:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9050 states, 5604 states have (on average 1.3096002855103497) internal successors, (7339), 5705 states have internal predecessors, (7339), 2842 states have call successors, (2842), 609 states have call predecessors, (2842), 601 states have return successors, (2914), 2806 states have call predecessors, (2914), 2830 states have call successors, (2914) [2021-11-25 20:11:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9050 states to 9050 states and 13095 transitions. [2021-11-25 20:11:46,808 INFO L78 Accepts]: Start accepts. Automaton has 9050 states and 13095 transitions. Word has length 40 [2021-11-25 20:11:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:46,810 INFO L470 AbstractCegarLoop]: Abstraction has 9050 states and 13095 transitions. [2021-11-25 20:11:46,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 20:11:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 9050 states and 13095 transitions. [2021-11-25 20:11:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 20:11:46,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:46,821 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:11:46,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:11:46,822 INFO L402 AbstractCegarLoop]: === Iteration 3 === 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 20:11:46,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1011554597, now seen corresponding path program 1 times [2021-11-25 20:11:46,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:11:46,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121894660] [2021-11-25 20:11:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:46,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:11:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 20:11:47,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:11:47,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121894660] [2021-11-25 20:11:47,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121894660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:47,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:47,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:11:47,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620250594] [2021-11-25 20:11:47,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:47,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:11:47,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:11:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:11:47,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:11:47,985 INFO L87 Difference]: Start difference. First operand 9050 states and 13095 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:11:51,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:11:53,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:11:55,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:00,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:12:03,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:05,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:08,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:10,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:15,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:16,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:20,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:12:24,181 WARN L534 Checker$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 20:12:26,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:28,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:31,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:34,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:36,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:39,169 WARN L534 Checker$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 20:12:41,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:44,006 WARN L534 Checker$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 20:12:45,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:45,397 INFO L93 Difference]: Finished difference Result 15591 states and 22507 transitions. [2021-11-25 20:12:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:12:45,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2021-11-25 20:12:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:45,686 INFO L225 Difference]: With dead ends: 15591 [2021-11-25 20:12:45,687 INFO L226 Difference]: Without dead ends: 15589 [2021-11-25 20:12:45,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:12:45,698 INFO L933 BasicCegarLoop]: 4122 mSDtfsCounter, 3199 mSDsluCounter, 12918 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 15722 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:45,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 15722 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1767 Invalid, 16 Unknown, 0 Unchecked, 56.8s Time] [2021-11-25 20:12:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15589 states. [2021-11-25 20:12:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15589 to 15569. [2021-11-25 20:12:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15569 states, 9638 states have (on average 1.3079477069931522) internal successors, (12606), 9800 states have internal predecessors, (12606), 4880 states have call successors, (4880), 1059 states have call predecessors, (4880), 1048 states have return successors, (4998), 4822 states have call predecessors, (4998), 4862 states have call successors, (4998) [2021-11-25 20:12:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15569 states to 15569 states and 22484 transitions. [2021-11-25 20:12:46,566 INFO L78 Accepts]: Start accepts. Automaton has 15569 states and 22484 transitions. Word has length 51 [2021-11-25 20:12:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:12:46,567 INFO L470 AbstractCegarLoop]: Abstraction has 15569 states and 22484 transitions. [2021-11-25 20:12:46,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:12:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 15569 states and 22484 transitions. [2021-11-25 20:12:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 20:12:46,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:46,570 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:12:46,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:12:46,571 INFO L402 AbstractCegarLoop]: === Iteration 4 === 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 20:12:46,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:46,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2133514117, now seen corresponding path program 1 times [2021-11-25 20:12:46,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:12:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229157047] [2021-11-25 20:12:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:46,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:12:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 20:12:47,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:12:47,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229157047] [2021-11-25 20:12:47,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229157047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:12:47,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:12:47,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:12:47,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653539018] [2021-11-25 20:12:47,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:12:47,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:12:47,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:12:47,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:12:47,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:12:47,349 INFO L87 Difference]: Start difference. First operand 15569 states and 22484 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:12:51,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:54,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:57,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:13:01,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:13:04,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:07,940 WARN L534 Checker$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 20:13:16,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:13:20,083 WARN L534 Checker$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 20:13:23,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:25,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:27,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:30,310 WARN L534 Checker$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 20:13:33,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:35,849 WARN L534 Checker$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 20:13:38,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:40,881 WARN L534 Checker$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 20:13:43,145 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 20:13:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:13:44,411 INFO L93 Difference]: Finished difference Result 16061 states and 23144 transitions. [2021-11-25 20:13:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:13:44,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2021-11-25 20:13:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:13:44,495 INFO L225 Difference]: With dead ends: 16061 [2021-11-25 20:13:44,495 INFO L226 Difference]: Without dead ends: 16057 [2021-11-25 20:13:44,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:13:44,508 INFO L933 BasicCegarLoop]: 4112 mSDtfsCounter, 3274 mSDsluCounter, 12884 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 15692 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:13:44,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3280 Valid, 15692 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1744 Invalid, 16 Unknown, 0 Unchecked, 56.5s Time] [2021-11-25 20:13:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16057 states. [2021-11-25 20:13:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16057 to 16050. [2021-11-25 20:13:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16050 states, 9934 states have (on average 1.3070263740688544) internal successors, (12984), 10101 states have internal predecessors, (12984), 5017 states have call successors, (5017), 1108 states have call predecessors, (5017), 1096 states have return successors, (5133), 4957 states have call predecessors, (5133), 4997 states have call successors, (5133) [2021-11-25 20:13:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16050 states to 16050 states and 23134 transitions. [2021-11-25 20:13:45,515 INFO L78 Accepts]: Start accepts. Automaton has 16050 states and 23134 transitions. Word has length 50 [2021-11-25 20:13:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:45,516 INFO L470 AbstractCegarLoop]: Abstraction has 16050 states and 23134 transitions. [2021-11-25 20:13:45,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:13:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 16050 states and 23134 transitions. [2021-11-25 20:13:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 20:13:45,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:45,518 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:13:45,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:13:45,519 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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 20:13:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2031156165, now seen corresponding path program 1 times [2021-11-25 20:13:45,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:45,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185658887] [2021-11-25 20:13:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:45,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 20:13:46,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:46,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185658887] [2021-11-25 20:13:46,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185658887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:46,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:46,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:13:46,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372476659] [2021-11-25 20:13:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:46,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:13:46,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:13:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:13:46,366 INFO L87 Difference]: Start difference. First operand 16050 states and 23134 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:13:50,122 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 20:13:55,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:13:58,376 WARN L534 Checker$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 20:14:02,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:03,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:05,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:06,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:13,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:17,530 WARN L534 Checker$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 20:14:20,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:23,139 WARN L534 Checker$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 20:14:25,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:28,143 WARN L534 Checker$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 20:14:30,407 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 20:14:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:31,792 INFO L93 Difference]: Finished difference Result 16066 states and 23146 transitions. [2021-11-25 20:14:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:14:31,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2021-11-25 20:14:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:31,875 INFO L225 Difference]: With dead ends: 16066 [2021-11-25 20:14:31,875 INFO L226 Difference]: Without dead ends: 15828 [2021-11-25 20:14:31,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:14:31,889 INFO L933 BasicCegarLoop]: 4125 mSDtfsCounter, 3196 mSDsluCounter, 12917 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 15731 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:31,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3202 Valid, 15731 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1761 Invalid, 11 Unknown, 0 Unchecked, 44.9s Time] [2021-11-25 20:14:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15828 states. [2021-11-25 20:14:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15828 to 15818. [2021-11-25 20:14:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15818 states, 9793 states have (on average 1.3075666292249566) internal successors, (12805), 9955 states have internal predecessors, (12805), 4941 states have call successors, (4941), 1092 states have call predecessors, (4941), 1081 states have return successors, (5060), 4884 states have call predecessors, (5060), 4924 states have call successors, (5060) [2021-11-25 20:14:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15818 states to 15818 states and 22806 transitions. [2021-11-25 20:14:32,856 INFO L78 Accepts]: Start accepts. Automaton has 15818 states and 22806 transitions. Word has length 61 [2021-11-25 20:14:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:32,857 INFO L470 AbstractCegarLoop]: Abstraction has 15818 states and 22806 transitions. [2021-11-25 20:14:32,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:14:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 15818 states and 22806 transitions. [2021-11-25 20:14:32,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 20:14:32,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:32,861 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:32,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:14:32,861 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 20:14:32,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:32,862 INFO L85 PathProgramCache]: Analyzing trace with hash 254953516, now seen corresponding path program 1 times [2021-11-25 20:14:32,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:32,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845521953] [2021-11-25 20:14:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:32,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-25 20:14:33,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845521953] [2021-11-25 20:14:33,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845521953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:33,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:33,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:14:33,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220039517] [2021-11-25 20:14:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:33,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:14:33,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:14:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:33,919 INFO L87 Difference]: Start difference. First operand 15818 states and 22806 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:14:37,381 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 20:14:41,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:43,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:14:44,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:14:47,750 WARN L534 Checker$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 20:14:50,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:51,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:56,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:58,889 WARN L534 Checker$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 20:15:01,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:15:03,785 WARN L534 Checker$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 20:15:06,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:15:08,622 WARN L534 Checker$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 20:15:10,886 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 20:15:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:15:11,609 INFO L93 Difference]: Finished difference Result 32474 states and 46956 transitions. [2021-11-25 20:15:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:15:11,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2021-11-25 20:15:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:15:11,703 INFO L225 Difference]: With dead ends: 32474 [2021-11-25 20:15:11,703 INFO L226 Difference]: Without dead ends: 16672 [2021-11-25 20:15:11,798 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 20:15:11,799 INFO L933 BasicCegarLoop]: 3571 mSDtfsCounter, 130 mSDsluCounter, 3835 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 0 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 6979 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:15:11,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 6979 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 895 Invalid, 11 Unknown, 0 Unchecked, 37.1s Time] [2021-11-25 20:15:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16672 states. [2021-11-25 20:15:12,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16672 to 15824. [2021-11-25 20:15:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15824 states, 9799 states have (on average 1.307378303908562) internal successors, (12811), 9961 states have internal predecessors, (12811), 4941 states have call successors, (4941), 1092 states have call predecessors, (4941), 1081 states have return successors, (5060), 4884 states have call predecessors, (5060), 4924 states have call successors, (5060) [2021-11-25 20:15:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15824 states to 15824 states and 22812 transitions. [2021-11-25 20:15:12,748 INFO L78 Accepts]: Start accepts. Automaton has 15824 states and 22812 transitions. Word has length 100 [2021-11-25 20:15:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:15:12,749 INFO L470 AbstractCegarLoop]: Abstraction has 15824 states and 22812 transitions. [2021-11-25 20:15:12,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:15:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 15824 states and 22812 transitions. [2021-11-25 20:15:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 20:15:12,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:12,760 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:15:12,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:15:12,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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 20:15:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1768409560, now seen corresponding path program 1 times [2021-11-25 20:15:12,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:12,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951470545] [2021-11-25 20:15:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:12,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-25 20:15:13,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:13,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951470545] [2021-11-25 20:15:13,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951470545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:15:13,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:15:13,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:15:13,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961728036] [2021-11-25 20:15:13,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:15:13,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:15:13,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:15:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:15:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:15:13,716 INFO L87 Difference]: Start difference. First operand 15824 states and 22812 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-25 20:15:16,720 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 20:15:19,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:15:23,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:15:27,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:15:32,212 WARN L534 Checker$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 20:15:34,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:15:36,322 WARN L534 Checker$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 20:15:38,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:15:41,066 WARN L534 Checker$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 20:15:43,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:15:45,863 WARN L534 Checker$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 20:15:48,126 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 20:15:48,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:15:48,861 INFO L93 Difference]: Finished difference Result 32495 states and 46983 transitions. [2021-11-25 20:15:48,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:15:48,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2021-11-25 20:15:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:15:48,956 INFO L225 Difference]: With dead ends: 32495 [2021-11-25 20:15:48,956 INFO L226 Difference]: Without dead ends: 16687 [2021-11-25 20:15:49,035 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 20:15:49,036 INFO L933 BasicCegarLoop]: 3573 mSDtfsCounter, 138 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 6981 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:15:49,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 6981 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 893 Invalid, 10 Unknown, 0 Unchecked, 34.6s Time] [2021-11-25 20:15:49,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16687 states. [2021-11-25 20:15:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16687 to 15824. [2021-11-25 20:15:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15824 states, 9799 states have (on average 1.307378303908562) internal successors, (12811), 9961 states have internal predecessors, (12811), 4941 states have call successors, (4941), 1092 states have call predecessors, (4941), 1081 states have return successors, (5060), 4884 states have call predecessors, (5060), 4924 states have call successors, (5060) [2021-11-25 20:15:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15824 states to 15824 states and 22812 transitions. [2021-11-25 20:15:49,996 INFO L78 Accepts]: Start accepts. Automaton has 15824 states and 22812 transitions. Word has length 113 [2021-11-25 20:15:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:15:49,997 INFO L470 AbstractCegarLoop]: Abstraction has 15824 states and 22812 transitions. [2021-11-25 20:15:49,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-25 20:15:49,998 INFO L276 IsEmpty]: Start isEmpty. Operand 15824 states and 22812 transitions. [2021-11-25 20:15:50,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 20:15:50,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:50,001 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:15:50,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:15:50,002 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 20:15:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1623385313, now seen corresponding path program 1 times [2021-11-25 20:15:50,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:50,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674848467] [2021-11-25 20:15:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:50,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 20:15:50,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:50,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674848467] [2021-11-25 20:15:50,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674848467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:15:50,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:15:50,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:15:50,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809008154] [2021-11-25 20:15:50,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:15:50,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:15:50,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:15:50,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:15:50,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:15:50,859 INFO L87 Difference]: Start difference. First operand 15824 states and 22812 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:15:54,502 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 20:15:58,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:16:04,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:16:06,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:16:10,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:16:13,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:16:18,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:16:19,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:16:27,512 WARN L534 Checker$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 20:16:30,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:16:33,305 WARN L534 Checker$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 20:16:35,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:16:38,425 WARN L534 Checker$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 20:16:41,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:16:43,675 WARN L534 Checker$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 20:16:45,938 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 20:16:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:16:47,654 INFO L93 Difference]: Finished difference Result 16075 states and 23119 transitions. [2021-11-25 20:16:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:16:47,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 115 [2021-11-25 20:16:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:16:47,721 INFO L225 Difference]: With dead ends: 16075 [2021-11-25 20:16:47,721 INFO L226 Difference]: Without dead ends: 16073 [2021-11-25 20:16:47,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:16:47,733 INFO L933 BasicCegarLoop]: 5030 mSDtfsCounter, 3094 mSDsluCounter, 14937 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 18334 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:16:47,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3099 Valid, 18334 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2253 Invalid, 11 Unknown, 0 Unchecked, 56.2s Time] [2021-11-25 20:16:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16073 states. [2021-11-25 20:16:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16073 to 16044. [2021-11-25 20:16:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16044 states, 9937 states have (on average 1.3063298782328672) internal successors, (12981), 10099 states have internal predecessors, (12981), 4991 states have call successors, (4991), 1120 states have call predecessors, (4991), 1113 states have return successors, (5110), 4938 states have call predecessors, (5110), 4974 states have call successors, (5110) [2021-11-25 20:16:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16044 states to 16044 states and 23082 transitions. [2021-11-25 20:16:48,701 INFO L78 Accepts]: Start accepts. Automaton has 16044 states and 23082 transitions. Word has length 115 [2021-11-25 20:16:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:16:48,701 INFO L470 AbstractCegarLoop]: Abstraction has 16044 states and 23082 transitions. [2021-11-25 20:16:48,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:16:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 16044 states and 23082 transitions. [2021-11-25 20:16:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 20:16:48,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:16:48,706 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:48,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:16:48,706 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_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 20:16:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:16:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash -275901482, now seen corresponding path program 1 times [2021-11-25 20:16:48,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:16:48,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910825724] [2021-11-25 20:16:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:48,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:16:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:16:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 20:16:49,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:16:49,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910825724] [2021-11-25 20:16:49,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910825724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:16:49,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:16:49,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:16:49,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352420732] [2021-11-25 20:16:49,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:16:49,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:16:49,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:16:49,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:16:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:16:49,735 INFO L87 Difference]: Start difference. First operand 16044 states and 23082 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:16:53,501 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 20:16:55,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:16:59,580 WARN L534 Checker$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 20:17:01,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:17:05,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:17:10,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:13,858 WARN L534 Checker$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 20:17:14,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:24,809 WARN L534 Checker$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 20:17:28,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:30,784 WARN L534 Checker$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 20:17:33,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:35,798 WARN L534 Checker$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 20:17:38,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:40,523 WARN L534 Checker$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 20:17:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:41,474 INFO L93 Difference]: Finished difference Result 18192 states and 26170 transitions. [2021-11-25 20:17:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:17:41,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 138 [2021-11-25 20:17:41,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:41,546 INFO L225 Difference]: With dead ends: 18192 [2021-11-25 20:17:41,547 INFO L226 Difference]: Without dead ends: 18190 [2021-11-25 20:17:41,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:17:41,559 INFO L933 BasicCegarLoop]: 3850 mSDtfsCounter, 1703 mSDsluCounter, 12321 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 0 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 14817 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:41,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 14817 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1831 Invalid, 13 Unknown, 0 Unchecked, 51.0s Time] [2021-11-25 20:17:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18190 states. [2021-11-25 20:17:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18190 to 18168. [2021-11-25 20:17:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18168 states, 11280 states have (on average 1.3078900709219858) internal successors, (14753), 11451 states have internal predecessors, (14753), 5627 states have call successors, (5627), 1265 states have call predecessors, (5627), 1258 states have return successors, (5762), 5569 states have call predecessors, (5762), 5610 states have call successors, (5762) [2021-11-25 20:17:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18168 states to 18168 states and 26142 transitions. [2021-11-25 20:17:42,558 INFO L78 Accepts]: Start accepts. Automaton has 18168 states and 26142 transitions. Word has length 138 [2021-11-25 20:17:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:42,559 INFO L470 AbstractCegarLoop]: Abstraction has 18168 states and 26142 transitions. [2021-11-25 20:17:42,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:17:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 18168 states and 26142 transitions. [2021-11-25 20:17:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-25 20:17:42,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:42,571 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:42,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:17:42,571 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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 20:17:42,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -982285129, now seen corresponding path program 1 times [2021-11-25 20:17:42,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:42,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654541883] [2021-11-25 20:17:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:42,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 20:17:43,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:43,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654541883] [2021-11-25 20:17:43,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654541883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:43,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:43,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:17:43,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636331379] [2021-11-25 20:17:43,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:43,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:17:43,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:43,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:17:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:17:43,897 INFO L87 Difference]: Start difference. First operand 18168 states and 26142 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:17:47,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:50,955 WARN L534 Checker$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 20:17:53,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:58,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:18:00,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:18:05,649 WARN L534 Checker$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 20:18:07,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:15,914 WARN L534 Checker$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 20:18:19,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:22,157 WARN L534 Checker$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 20:18:24,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:27,095 WARN L534 Checker$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 20:18:29,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:31,913 WARN L534 Checker$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 20:18:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:33,364 INFO L93 Difference]: Finished difference Result 19346 states and 27724 transitions. [2021-11-25 20:18:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:18:33,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2021-11-25 20:18:33,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:33,486 INFO L225 Difference]: With dead ends: 19346 [2021-11-25 20:18:33,487 INFO L226 Difference]: Without dead ends: 19344 [2021-11-25 20:18:33,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:18:33,496 INFO L933 BasicCegarLoop]: 4631 mSDtfsCounter, 3453 mSDsluCounter, 14053 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 3 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 17260 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:33,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3458 Valid, 17260 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1931 Invalid, 12 Unknown, 0 Unchecked, 48.8s Time] [2021-11-25 20:18:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19344 states. [2021-11-25 20:18:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19344 to 19271. [2021-11-25 20:18:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19271 states, 11952 states have (on average 1.3058902275769746) internal successors, (15608), 12142 states have internal predecessors, (15608), 5945 states have call successors, (5945), 1382 states have call predecessors, (5945), 1371 states have return successors, (6080), 5876 states have call predecessors, (6080), 5928 states have call successors, (6080) [2021-11-25 20:18:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19271 states to 19271 states and 27633 transitions. [2021-11-25 20:18:34,303 INFO L78 Accepts]: Start accepts. Automaton has 19271 states and 27633 transitions. Word has length 148 [2021-11-25 20:18:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:18:34,304 INFO L470 AbstractCegarLoop]: Abstraction has 19271 states and 27633 transitions. [2021-11-25 20:18:34,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:18:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 19271 states and 27633 transitions. [2021-11-25 20:18:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-25 20:18:34,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:18:34,312 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:34,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:18:34,313 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_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 20:18:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:18:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash -4640581, now seen corresponding path program 1 times [2021-11-25 20:18:34,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:18:34,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318144808] [2021-11-25 20:18:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:18:34,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:18:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:18:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 20:18:36,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:18:36,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318144808] [2021-11-25 20:18:36,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318144808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:18:36,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:18:36,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:18:36,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780251894] [2021-11-25 20:18:36,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:18:36,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:18:36,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:18:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:18:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:18:36,131 INFO L87 Difference]: Start difference. First operand 19271 states and 27633 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, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-25 20:18:40,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:42,876 WARN L534 Checker$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 20:18:45,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:48,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:18:51,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:18:53,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:18:55,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:18:59,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:02,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:03,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:10,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:14,047 WARN L534 Checker$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 20:19:16,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:18,853 WARN L534 Checker$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 20:19:21,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:23,921 WARN L534 Checker$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 20:19:26,207 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 20:19:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:27,327 INFO L93 Difference]: Finished difference Result 38581 states and 55579 transitions. [2021-11-25 20:19:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:19:27,327 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, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 171 [2021-11-25 20:19:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:27,382 INFO L225 Difference]: With dead ends: 38581 [2021-11-25 20:19:27,383 INFO L226 Difference]: Without dead ends: 19326 [2021-11-25 20:19:27,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:27,443 INFO L933 BasicCegarLoop]: 3407 mSDtfsCounter, 19 mSDsluCounter, 11494 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 1 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13604 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:27,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 13604 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1736 Invalid, 14 Unknown, 0 Unchecked, 50.4s Time] [2021-11-25 20:19:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19326 states. [2021-11-25 20:19:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19326 to 19291. [2021-11-25 20:19:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19291 states, 11967 states have (on average 1.3055068103952536) internal successors, (15623), 12157 states have internal predecessors, (15623), 5945 states have call successors, (5945), 1382 states have call predecessors, (5945), 1376 states have return successors, (6090), 5881 states have call predecessors, (6090), 5928 states have call successors, (6090) [2021-11-25 20:19:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19291 states to 19291 states and 27658 transitions. [2021-11-25 20:19:28,344 INFO L78 Accepts]: Start accepts. Automaton has 19291 states and 27658 transitions. Word has length 171 [2021-11-25 20:19:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:28,345 INFO L470 AbstractCegarLoop]: Abstraction has 19291 states and 27658 transitions. [2021-11-25 20:19:28,345 INFO L471 AbstractCegarLoop]: INTERPOLANT 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, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2021-11-25 20:19:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 19291 states and 27658 transitions. [2021-11-25 20:19:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-25 20:19:28,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:28,354 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:28,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:19:28,354 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_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 20:19:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash 361531692, now seen corresponding path program 1 times [2021-11-25 20:19:28,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:28,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046524989] [2021-11-25 20:19:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:28,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 20:19:29,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:29,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046524989] [2021-11-25 20:19:29,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046524989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:29,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:29,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:29,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491000978] [2021-11-25 20:19:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:29,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:29,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:29,439 INFO L87 Difference]: Start difference. First operand 19291 states and 27658 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:19:32,367 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 20:19:35,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:38,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:19:41,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:46,366 WARN L534 Checker$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 20:19:50,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:52,816 WARN L534 Checker$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 20:19:55,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:57,604 WARN L534 Checker$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 20:20:00,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:02,283 WARN L534 Checker$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 20:20:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:03,016 INFO L93 Difference]: Finished difference Result 38616 states and 55609 transitions. [2021-11-25 20:20:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:20:03,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 174 [2021-11-25 20:20:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:03,168 INFO L225 Difference]: With dead ends: 38616 [2021-11-25 20:20:03,168 INFO L226 Difference]: Without dead ends: 19341 [2021-11-25 20:20:03,210 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 20:20:03,210 INFO L933 BasicCegarLoop]: 3392 mSDtfsCounter, 2 mSDsluCounter, 3820 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6779 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:03,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6779 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 872 Invalid, 10 Unknown, 0 Unchecked, 33.0s Time] [2021-11-25 20:20:03,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19341 states. [2021-11-25 20:20:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19341 to 19301. [2021-11-25 20:20:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19301 states, 11977 states have (on average 1.3052517324872672) internal successors, (15633), 12167 states have internal predecessors, (15633), 5945 states have call successors, (5945), 1382 states have call predecessors, (5945), 1376 states have return successors, (6090), 5881 states have call predecessors, (6090), 5928 states have call successors, (6090) [2021-11-25 20:20:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19301 states to 19301 states and 27668 transitions. [2021-11-25 20:20:03,934 INFO L78 Accepts]: Start accepts. Automaton has 19301 states and 27668 transitions. Word has length 174 [2021-11-25 20:20:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:03,935 INFO L470 AbstractCegarLoop]: Abstraction has 19301 states and 27668 transitions. [2021-11-25 20:20:03,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:20:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 19301 states and 27668 transitions. [2021-11-25 20:20:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-25 20:20:03,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:03,947 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:20:03,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:20:03,948 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_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 20:20:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash 95702180, now seen corresponding path program 1 times [2021-11-25 20:20:03,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:03,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652540066] [2021-11-25 20:20:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:03,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 20:20:05,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652540066] [2021-11-25 20:20:05,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652540066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:20:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5728963] [2021-11-25 20:20:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:05,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:05,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:20:05,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:20:05,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da43225-e349-4e00-b06f-03834858cc59/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:20:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:08,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 15802 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:20:08,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:20:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 20:20:09,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:20:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 20:20:10,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5728963] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:20:10,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1111569087] [2021-11-25 20:20:10,165 INFO L159 IcfgInterpreter]: Started Sifa with 145 locations of interest [2021-11-25 20:20:10,165 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:20:10,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:20:10,176 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:20:10,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs