./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 59473e3c2ae80c2e7996950da3475e9070fa07527cbe1064da7145ffd0ce24e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:19:19,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:19:19,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:19:19,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:19:19,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:19:19,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:19:19,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:19:19,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:19:19,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:19:19,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:19:19,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:19:19,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:19:19,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:19:19,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:19:19,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:19:19,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:19:19,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:19:19,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:19:19,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:19:19,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:19:19,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:19:19,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:19:19,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:19:19,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:19:19,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:19:19,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:19:19,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:19:19,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:19:19,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:19:19,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:19:19,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:19:19,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:19:19,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:19:19,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:19:19,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:19:19,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:19:19,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:19:19,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:19:19,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:19:19,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:19:19,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:19:19,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:19:19,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:19:19,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:19:19,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:19:19,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:19:19,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:19:19,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:19:19,263 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:19:19,266 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:19:19,266 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:19:19,266 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:19:19,267 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:19:19,267 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:19:19,267 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:19:19,268 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:19:19,269 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:19:19,269 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:19:19,270 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:19:19,270 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:19:19,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:19:19,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:19:19,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:19:19,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:19:19,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:19:19,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:19:19,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:19:19,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:19:19,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:19:19,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:19:19,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:19:19,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:19:19,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:19:19,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:19:19,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:19:19,278 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:19:19,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:19:19,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:19:19,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:19:19,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:19:19,280 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59473e3c2ae80c2e7996950da3475e9070fa07527cbe1064da7145ffd0ce24e6 [2021-11-21 00:19:19,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:19:19,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:19:19,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:19:19,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:19:19,611 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:19:19,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-21 00:19:19,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/data/44e8208fb/ce1eca0a78cf4fe6bde32ce854c9b435/FLAG2b9f51577 [2021-11-21 00:19:20,944 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:19:20,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-21 00:19:21,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/data/44e8208fb/ce1eca0a78cf4fe6bde32ce854c9b435/FLAG2b9f51577 [2021-11-21 00:19:21,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/data/44e8208fb/ce1eca0a78cf4fe6bde32ce854c9b435 [2021-11-21 00:19:21,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:19:21,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:19:21,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:19:21,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:19:21,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:19:21,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:19:21" (1/1) ... [2021-11-21 00:19:21,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e424ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:21, skipping insertion in model container [2021-11-21 00:19:21,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:19:21" (1/1) ... [2021-11-21 00:19:21,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:19:21,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:19:23,960 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[358872,358885] [2021-11-21 00:19:23,964 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359038,359051] [2021-11-21 00:19:23,965 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359202,359215] [2021-11-21 00:19:23,965 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359367,359380] [2021-11-21 00:19:23,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:19:24,128 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:19:24,704 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[358872,358885] [2021-11-21 00:19:24,704 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359038,359051] [2021-11-21 00:19:24,705 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359202,359215] [2021-11-21 00:19:24,706 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_3e966c2e-68d3-4092-a8cf-234dcc400a26/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i[359367,359380] [2021-11-21 00:19:24,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:19:25,091 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:19:25,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25 WrapperNode [2021-11-21 00:19:25,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:19:25,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:19:25,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:19:25,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:19:25,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,417 INFO L137 Inliner]: procedures = 258, calls = 1714, calls flagged for inlining = 142, calls inlined = 128, statements flattened = 3710 [2021-11-21 00:19:25,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:19:25,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:19:25,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:19:25,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:19:25,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:19:25,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:19:25,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:19:25,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:19:25,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (1/1) ... [2021-11-21 00:19:25,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:19:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:25,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:19:25,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e966c2e-68d3-4092-a8cf-234dcc400a26/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:19:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_i2c_xfer [2021-11-21 00:19:25,841 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_i2c_xfer [2021-11-21 00:19:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usb_device_exit [2021-11-21 00:19:25,842 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usb_device_exit [2021-11-21 00:19:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_mt352_frontend_attach_vp7049 [2021-11-21 00:19:25,842 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_mt352_frontend_attach_vp7049 [2021-11-21 00:19:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_m920x_driver_exit_10_2 [2021-11-21 00:19:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_m920x_driver_exit_10_2 [2021-11-21 00:19:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:19:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:19:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:19:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_usb_device_init [2021-11-21 00:19:25,843 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_usb_device_init [2021-11-21 00:19:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:19:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:19:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:19:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_mt2060_tuner_attach [2021-11-21 00:19:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_mt2060_tuner_attach [2021-11-21 00:19:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_tda8275_61_tuner_attach [2021-11-21 00:19:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_tda8275_61_tuner_attach [2021-11-21 00:19:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure usb_altnum_to_altsetting [2021-11-21 00:19:25,845 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_altnum_to_altsetting [2021-11-21 00:19:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_6_4 [2021-11-21 00:19:25,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_6_4 [2021-11-21 00:19:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:19:25,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:19:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_update_filters [2021-11-21 00:19:25,846 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_update_filters [2021-11-21 00:19:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_write_seq [2021-11-21 00:19:25,846 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_write_seq [2021-11-21 00:19:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_tda8275_60_tuner_attach [2021-11-21 00:19:25,846 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_tda8275_60_tuner_attach [2021-11-21 00:19:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-11-21 00:19:25,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-11-21 00:19:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_pid_filter_ctrl [2021-11-21 00:19:25,847 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_pid_filter_ctrl [2021-11-21 00:19:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-21 00:19:25,847 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-21 00:19:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_probe [2021-11-21 00:19:25,848 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_probe [2021-11-21 00:19:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:19:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_rc_query [2021-11-21 00:19:25,849 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_rc_query [2021-11-21 00:19:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2021-11-21 00:19:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2021-11-21 00:19:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:19:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:19:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:19:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:19:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:19:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 00:19:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 00:19:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_parse_rc_state [2021-11-21 00:19:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_parse_rc_state [2021-11-21 00:19:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:19:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:19:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_firmware_download [2021-11-21 00:19:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_firmware_download [2021-11-21 00:19:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:19:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:19:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_pid_filter [2021-11-21 00:19:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_pid_filter [2021-11-21 00:19:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:19:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:19:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:19:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-21 00:19:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-21 00:19:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:19:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_tda10046_0b_frontend_attach [2021-11-21 00:19:25,857 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_tda10046_0b_frontend_attach [2021-11-21 00:19:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:19:25,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:19:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:19:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:19:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:19:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_mt352_frontend_attach [2021-11-21 00:19:25,858 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_mt352_frontend_attach [2021-11-21 00:19:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-21 00:19:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-11-21 00:19:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 00:19:25,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 00:19:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:19:25,860 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:19:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:19:25,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:19:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:19:25,862 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_tda10046_08_frontend_attach [2021-11-21 00:19:25,862 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_tda10046_08_frontend_attach [2021-11-21 00:19:25,862 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_qt1010_tuner_attach [2021-11-21 00:19:25,863 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_qt1010_tuner_attach [2021-11-21 00:19:25,863 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_mt352_demod_init [2021-11-21 00:19:25,863 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_mt352_demod_init [2021-11-21 00:19:25,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:19:25,863 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_write [2021-11-21 00:19:25,863 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_write [2021-11-21 00:19:25,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:19:25,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:19:25,864 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_fmd1216me_tuner_attach [2021-11-21 00:19:25,864 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_fmd1216me_tuner_attach [2021-11-21 00:19:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:19:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:19:25,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:19:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:19:25,865 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:19:25,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:19:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-21 00:19:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-21 00:19:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-11-21 00:19:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-11-21 00:19:25,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:19:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:19:25,874 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_set_filter [2021-11-21 00:19:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_set_filter [2021-11-21 00:19:25,875 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_identify_state [2021-11-21 00:19:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_identify_state [2021-11-21 00:19:25,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:19:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:19:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:19:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_i2c_func [2021-11-21 00:19:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_i2c_func [2021-11-21 00:19:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:19:25,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:19:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure m920x_read [2021-11-21 00:19:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure m920x_read [2021-11-21 00:19:26,807 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:19:26,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:19:29,004 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:24:31,088 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:24:31,191 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:24:34,019 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:24:34,019 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 00:24:34,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:34 BoogieIcfgContainer [2021-11-21 00:24:34,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:24:34,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:24:34,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:24:34,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:24:34,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:19:21" (1/3) ... [2021-11-21 00:24:34,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8f4b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:24:34, skipping insertion in model container [2021-11-21 00:24:34,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:25" (2/3) ... [2021-11-21 00:24:34,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8f4b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:24:34, skipping insertion in model container [2021-11-21 00:24:34,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:34" (3/3) ... [2021-11-21 00:24:34,038 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-dvb-usb-dvb-usb-m920x.cil.i [2021-11-21 00:24:34,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:24:34,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 00:24:34,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:24:34,132 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:24:34,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 00:24:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 1031 states, 658 states have (on average 1.378419452887538) internal successors, (907), 670 states have internal predecessors, (907), 317 states have call successors, (317), 54 states have call predecessors, (317), 53 states have return successors, (311), 311 states have call predecessors, (311), 311 states have call successors, (311) [2021-11-21 00:24:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2021-11-21 00:24:34,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:34,264 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:34,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash 971355088, now seen corresponding path program 1 times [2021-11-21 00:24:34,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:34,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099184531] [2021-11-21 00:24:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:34,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-21 00:24:36,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:36,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099184531] [2021-11-21 00:24:36,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099184531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:36,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:36,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:24:36,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163730850] [2021-11-21 00:24:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:36,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:36,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:36,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:36,181 INFO L87 Difference]: Start difference. First operand has 1031 states, 658 states have (on average 1.378419452887538) internal successors, (907), 670 states have internal predecessors, (907), 317 states have call successors, (317), 54 states have call predecessors, (317), 53 states have return successors, (311), 311 states have call predecessors, (311), 311 states have call successors, (311) Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:24:38,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:24:41,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:24:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:43,199 INFO L93 Difference]: Finished difference Result 2854 states and 4318 transitions. [2021-11-21 00:24:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:24:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 562 [2021-11-21 00:24:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:43,251 INFO L225 Difference]: With dead ends: 2854 [2021-11-21 00:24:43,252 INFO L226 Difference]: Without dead ends: 1917 [2021-11-21 00:24:43,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:43,272 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1341 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:43,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 2857 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 460 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-21 00:24:43,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-11-21 00:24:43,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1898. [2021-11-21 00:24:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1234 states have (on average 1.3849270664505673) internal successors, (1709), 1262 states have internal predecessors, (1709), 558 states have call successors, (558), 104 states have call predecessors, (558), 103 states have return successors, (554), 549 states have call predecessors, (554), 554 states have call successors, (554) [2021-11-21 00:24:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2821 transitions. [2021-11-21 00:24:43,585 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2821 transitions. Word has length 562 [2021-11-21 00:24:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:43,594 INFO L470 AbstractCegarLoop]: Abstraction has 1898 states and 2821 transitions. [2021-11-21 00:24:43,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:24:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2821 transitions. [2021-11-21 00:24:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2021-11-21 00:24:43,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:43,628 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:43,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:24:43,629 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:43,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:43,633 INFO L85 PathProgramCache]: Analyzing trace with hash 931884965, now seen corresponding path program 1 times [2021-11-21 00:24:43,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:43,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126321780] [2021-11-21 00:24:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:43,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11559 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11559 trivial. 0 not checked. [2021-11-21 00:24:44,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:44,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126321780] [2021-11-21 00:24:44,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126321780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:44,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:44,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:24:44,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526160317] [2021-11-21 00:24:44,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:44,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:44,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:44,596 INFO L87 Difference]: Start difference. First operand 1898 states and 2821 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-21 00:24:46,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:24:49,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:24:52,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:24:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:53,779 INFO L93 Difference]: Finished difference Result 4547 states and 6747 transitions. [2021-11-21 00:24:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:24:53,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 564 [2021-11-21 00:24:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:53,815 INFO L225 Difference]: With dead ends: 4547 [2021-11-21 00:24:53,815 INFO L226 Difference]: Without dead ends: 2758 [2021-11-21 00:24:53,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:53,830 INFO L933 BasicCegarLoop]: 1513 mSDtfsCounter, 1272 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:53,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 2758 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 473 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-21 00:24:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2021-11-21 00:24:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 2754. [2021-11-21 00:24:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 1808 states have (on average 1.3871681415929205) internal successors, (2508), 1845 states have internal predecessors, (2508), 787 states have call successors, (787), 157 states have call predecessors, (787), 156 states have return successors, (783), 778 states have call predecessors, (783), 783 states have call successors, (783) [2021-11-21 00:24:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 4078 transitions. [2021-11-21 00:24:54,031 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 4078 transitions. Word has length 564 [2021-11-21 00:24:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:54,033 INFO L470 AbstractCegarLoop]: Abstraction has 2754 states and 4078 transitions. [2021-11-21 00:24:54,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-21 00:24:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 4078 transitions. [2021-11-21 00:24:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2021-11-21 00:24:54,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:54,053 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:54,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:24:54,054 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:24:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2014304652, now seen corresponding path program 1 times [2021-11-21 00:24:54,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:54,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682295788] [2021-11-21 00:24:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:54,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-21 00:24:54,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:54,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682295788] [2021-11-21 00:24:54,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682295788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:54,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:54,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:24:54,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220681775] [2021-11-21 00:24:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:54,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:24:54,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:24:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:24:54,923 INFO L87 Difference]: Start difference. First operand 2754 states and 4078 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:24:57,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:24:58,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:25:02,304 INFO L93 Difference]: Finished difference Result 7083 states and 10467 transitions. [2021-11-21 00:25:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:25:02,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 564 [2021-11-21 00:25:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:25:02,354 INFO L225 Difference]: With dead ends: 7083 [2021-11-21 00:25:02,355 INFO L226 Difference]: Without dead ends: 4438 [2021-11-21 00:25:02,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:02,374 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 1263 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:25:02,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 2784 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 478 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 00:25:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2021-11-21 00:25:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 4417. [2021-11-21 00:25:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4417 states, 2915 states have (on average 1.3893653516295026) internal successors, (4050), 2982 states have internal predecessors, (4050), 1235 states have call successors, (1235), 265 states have call predecessors, (1235), 264 states have return successors, (1231), 1214 states have call predecessors, (1231), 1231 states have call successors, (1231) [2021-11-21 00:25:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 6516 transitions. [2021-11-21 00:25:02,677 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 6516 transitions. Word has length 564 [2021-11-21 00:25:02,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:25:02,678 INFO L470 AbstractCegarLoop]: Abstraction has 4417 states and 6516 transitions. [2021-11-21 00:25:02,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:02,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 6516 transitions. [2021-11-21 00:25:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-11-21 00:25:02,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:25:02,689 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:25:02,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:25:02,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:25:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:25:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1756681372, now seen corresponding path program 1 times [2021-11-21 00:25:02,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:25:02,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186964134] [2021-11-21 00:25:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:02,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:25:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-21 00:25:03,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:25:03,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186964134] [2021-11-21 00:25:03,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186964134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:25:03,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:25:03,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:25:03,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884422218] [2021-11-21 00:25:03,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:25:03,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:25:03,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:25:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:25:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:03,488 INFO L87 Difference]: Start difference. First operand 4417 states and 6516 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:05,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:07,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:10,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:25:11,750 INFO L93 Difference]: Finished difference Result 12001 states and 17675 transitions. [2021-11-21 00:25:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:25:11,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 565 [2021-11-21 00:25:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:25:11,835 INFO L225 Difference]: With dead ends: 12001 [2021-11-21 00:25:11,835 INFO L226 Difference]: Without dead ends: 7693 [2021-11-21 00:25:11,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:11,871 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1253 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:25:11,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 2883 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 508 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 00:25:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7693 states. [2021-11-21 00:25:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7693 to 7672. [2021-11-21 00:25:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7672 states, 5080 states have (on average 1.3901574803149606) internal successors, (7062), 5207 states have internal predecessors, (7062), 2109 states have call successors, (2109), 481 states have call predecessors, (2109), 480 states have return successors, (2105), 2064 states have call predecessors, (2105), 2105 states have call successors, (2105) [2021-11-21 00:25:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7672 states to 7672 states and 11276 transitions. [2021-11-21 00:25:12,637 INFO L78 Accepts]: Start accepts. Automaton has 7672 states and 11276 transitions. Word has length 565 [2021-11-21 00:25:12,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:25:12,639 INFO L470 AbstractCegarLoop]: Abstraction has 7672 states and 11276 transitions. [2021-11-21 00:25:12,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 7672 states and 11276 transitions. [2021-11-21 00:25:12,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2021-11-21 00:25:12,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:25:12,652 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:25:12,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:25:12,653 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:25:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:25:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash 246650699, now seen corresponding path program 1 times [2021-11-21 00:25:12,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:25:12,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389408042] [2021-11-21 00:25:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:12,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:25:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-21 00:25:13,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:25:13,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389408042] [2021-11-21 00:25:13,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389408042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:25:13,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:25:13,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:25:13,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045281582] [2021-11-21 00:25:13,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:25:13,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:25:13,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:25:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:25:13,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:13,449 INFO L87 Difference]: Start difference. First operand 7672 states and 11276 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:15,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:17,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:20,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:25:21,753 INFO L93 Difference]: Finished difference Result 21679 states and 31816 transitions. [2021-11-21 00:25:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:25:21,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 566 [2021-11-21 00:25:21,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:25:21,917 INFO L225 Difference]: With dead ends: 21679 [2021-11-21 00:25:21,917 INFO L226 Difference]: Without dead ends: 14116 [2021-11-21 00:25:21,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:21,973 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1261 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:25:21,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1261 Valid, 2933 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 521 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 00:25:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14116 states. [2021-11-21 00:25:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14116 to 14095. [2021-11-21 00:25:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14095 states, 9368 states have (on average 1.3895175064047822) internal successors, (13017), 9615 states have internal predecessors, (13017), 3812 states have call successors, (3812), 913 states have call predecessors, (3812), 912 states have return successors, (3808), 3719 states have call predecessors, (3808), 3808 states have call successors, (3808) [2021-11-21 00:25:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14095 states to 14095 states and 20637 transitions. [2021-11-21 00:25:22,776 INFO L78 Accepts]: Start accepts. Automaton has 14095 states and 20637 transitions. Word has length 566 [2021-11-21 00:25:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:25:22,779 INFO L470 AbstractCegarLoop]: Abstraction has 14095 states and 20637 transitions. [2021-11-21 00:25:22,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 14095 states and 20637 transitions. [2021-11-21 00:25:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2021-11-21 00:25:22,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:25:22,789 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:25:22,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:25:22,789 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:25:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:25:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 912091683, now seen corresponding path program 1 times [2021-11-21 00:25:22,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:25:22,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699486002] [2021-11-21 00:25:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:22,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:25:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-21 00:25:23,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:25:23,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699486002] [2021-11-21 00:25:23,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699486002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:25:23,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:25:23,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:25:23,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384131577] [2021-11-21 00:25:23,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:25:23,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:25:23,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:25:23,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:25:23,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:23,669 INFO L87 Difference]: Start difference. First operand 14095 states and 20637 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:25,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:29,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:25:31,262 INFO L93 Difference]: Finished difference Result 40644 states and 59408 transitions. [2021-11-21 00:25:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:25:31,263 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), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 567 [2021-11-21 00:25:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:25:31,398 INFO L225 Difference]: With dead ends: 40644 [2021-11-21 00:25:31,398 INFO L226 Difference]: Without dead ends: 26658 [2021-11-21 00:25:31,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:31,464 INFO L933 BasicCegarLoop]: 1711 mSDtfsCounter, 1258 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 2970 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:25:31,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 2970 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-21 00:25:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26658 states. [2021-11-21 00:25:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26658 to 26637. [2021-11-21 00:25:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26637 states, 17759 states have (on average 1.3871276535840982) internal successors, (24634), 18246 states have internal predecessors, (24634), 7099 states have call successors, (7099), 1777 states have call predecessors, (7099), 1776 states have return successors, (7095), 6910 states have call predecessors, (7095), 7095 states have call successors, (7095) [2021-11-21 00:25:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26637 states to 26637 states and 38828 transitions. [2021-11-21 00:25:32,768 INFO L78 Accepts]: Start accepts. Automaton has 26637 states and 38828 transitions. Word has length 567 [2021-11-21 00:25:32,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:25:32,769 INFO L470 AbstractCegarLoop]: Abstraction has 26637 states and 38828 transitions. [2021-11-21 00:25:32,769 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), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 26637 states and 38828 transitions. [2021-11-21 00:25:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2021-11-21 00:25:32,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:25:32,777 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:25:32,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:25:32,777 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:25:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:25:32,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2144407415, now seen corresponding path program 1 times [2021-11-21 00:25:32,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:25:32,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185307835] [2021-11-21 00:25:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:32,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:25:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-21 00:25:33,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:25:33,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185307835] [2021-11-21 00:25:33,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185307835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:25:33,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:25:33,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:25:33,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515723975] [2021-11-21 00:25:33,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:25:33,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:25:33,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:25:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:25:33,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:33,748 INFO L87 Difference]: Start difference. First operand 26637 states and 38828 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:35,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:41,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:25:41,256 INFO L93 Difference]: Finished difference Result 77325 states and 112531 transitions. [2021-11-21 00:25:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:25:41,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 568 [2021-11-21 00:25:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:25:41,540 INFO L225 Difference]: With dead ends: 77325 [2021-11-21 00:25:41,540 INFO L226 Difference]: Without dead ends: 50797 [2021-11-21 00:25:41,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:41,631 INFO L933 BasicCegarLoop]: 1871 mSDtfsCounter, 1259 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:25:41,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 3130 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 585 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 00:25:41,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50797 states. [2021-11-21 00:25:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50797 to 50776. [2021-11-21 00:25:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50776 states, 33965 states have (on average 1.384248491093773) internal successors, (47016), 34929 states have internal predecessors, (47016), 13334 states have call successors, (13334), 3475 states have call predecessors, (13334), 3474 states have return successors, (13330), 12953 states have call predecessors, (13330), 13330 states have call successors, (13330) [2021-11-21 00:25:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50776 states to 50776 states and 73680 transitions. [2021-11-21 00:25:44,359 INFO L78 Accepts]: Start accepts. Automaton has 50776 states and 73680 transitions. Word has length 568 [2021-11-21 00:25:44,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:25:44,360 INFO L470 AbstractCegarLoop]: Abstraction has 50776 states and 73680 transitions. [2021-11-21 00:25:44,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 50776 states and 73680 transitions. [2021-11-21 00:25:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-11-21 00:25:44,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:25:44,369 INFO L514 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:25:44,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:25:44,369 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:25:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:25:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash -534735878, now seen corresponding path program 1 times [2021-11-21 00:25:44,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:25:44,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616412674] [2021-11-21 00:25:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:25:44,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:25:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11556 trivial. 0 not checked. [2021-11-21 00:25:45,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:25:45,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616412674] [2021-11-21 00:25:45,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616412674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:25:45,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:25:45,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:25:45,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232122129] [2021-11-21 00:25:45,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:25:45,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:25:45,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:25:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:25:45,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:45,287 INFO L87 Difference]: Start difference. First operand 50776 states and 73680 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:25:47,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:50,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:52,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:25:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:25:55,908 INFO L93 Difference]: Finished difference Result 138384 states and 200560 transitions. [2021-11-21 00:25:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:25:55,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 583 [2021-11-21 00:25:55,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:25:56,346 INFO L225 Difference]: With dead ends: 138384 [2021-11-21 00:25:56,347 INFO L226 Difference]: Without dead ends: 87717 [2021-11-21 00:25:56,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:25:56,514 INFO L933 BasicCegarLoop]: 1742 mSDtfsCounter, 1164 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:25:56,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 3003 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 524 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-21 00:25:56,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87717 states. [2021-11-21 00:25:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87717 to 87570. [2021-11-21 00:25:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87570 states, 58857 states have (on average 1.3789863567630019) internal successors, (81163), 60673 states have internal predecessors, (81163), 22511 states have call successors, (22511), 6200 states have call predecessors, (22511), 6199 states have return successors, (22507), 21620 states have call predecessors, (22507), 22507 states have call successors, (22507) [2021-11-21 00:26:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87570 states to 87570 states and 126181 transitions. [2021-11-21 00:26:00,755 INFO L78 Accepts]: Start accepts. Automaton has 87570 states and 126181 transitions. Word has length 583 [2021-11-21 00:26:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:00,771 INFO L470 AbstractCegarLoop]: Abstraction has 87570 states and 126181 transitions. [2021-11-21 00:26:00,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:26:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 87570 states and 126181 transitions. [2021-11-21 00:26:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-11-21 00:26:00,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:00,783 INFO L514 BasicCegarLoop]: trace histogram [58, 54, 54, 54, 54, 54, 54, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:26:00,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:26:00,784 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:26:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 931735747, now seen corresponding path program 1 times [2021-11-21 00:26:00,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:00,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686996177] [2021-11-21 00:26:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:00,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11927 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11927 trivial. 0 not checked. [2021-11-21 00:26:01,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:01,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686996177] [2021-11-21 00:26:01,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686996177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:01,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:01,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:26:01,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415785987] [2021-11-21 00:26:01,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:01,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:26:01,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:26:01,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:26:01,947 INFO L87 Difference]: Start difference. First operand 87570 states and 126181 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 00:26:04,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:05,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:07,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:08,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:16,733 INFO L93 Difference]: Finished difference Result 171563 states and 249973 transitions. [2021-11-21 00:26:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:26:16,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 609 [2021-11-21 00:26:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:17,813 INFO L225 Difference]: With dead ends: 171563 [2021-11-21 00:26:17,813 INFO L226 Difference]: Without dead ends: 171561 [2021-11-21 00:26:17,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:26:17,869 INFO L933 BasicCegarLoop]: 1572 mSDtfsCounter, 1353 mSDsluCounter, 4955 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 5851 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:17,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1356 Valid, 5851 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 919 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2021-11-21 00:26:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171561 states. [2021-11-21 00:26:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171561 to 171429. [2021-11-21 00:26:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171429 states, 114707 states have (on average 1.3766465865204391) internal successors, (157911), 118465 states have internal predecessors, (157911), 44452 states have call successors, (44452), 12269 states have call predecessors, (44452), 12267 states have return successors, (47478), 42542 states have call predecessors, (47478), 44444 states have call successors, (47478) [2021-11-21 00:26:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171429 states to 171429 states and 249841 transitions. [2021-11-21 00:26:25,463 INFO L78 Accepts]: Start accepts. Automaton has 171429 states and 249841 transitions. Word has length 609 [2021-11-21 00:26:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:25,465 INFO L470 AbstractCegarLoop]: Abstraction has 171429 states and 249841 transitions. [2021-11-21 00:26:25,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 00:26:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 171429 states and 249841 transitions. [2021-11-21 00:26:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2021-11-21 00:26:25,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:25,476 INFO L514 BasicCegarLoop]: trace histogram [56, 54, 54, 54, 54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:26:25,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:26:25,477 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:26:25,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash 860284638, now seen corresponding path program 1 times [2021-11-21 00:26:25,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:25,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456549190] [2021-11-21 00:26:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:25,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11676 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11666 trivial. 0 not checked. [2021-11-21 00:26:26,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:26,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456549190] [2021-11-21 00:26:26,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456549190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:26,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:26,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:26:26,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761409617] [2021-11-21 00:26:26,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:26,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:26:26,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:26:26,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:26:26,101 INFO L87 Difference]: Start difference. First operand 171429 states and 249841 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-21 00:26:28,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:30,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:31,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:43,620 INFO L93 Difference]: Finished difference Result 412991 states and 600674 transitions. [2021-11-21 00:26:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:26:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 604 [2021-11-21 00:26:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:44,945 INFO L225 Difference]: With dead ends: 412991 [2021-11-21 00:26:44,945 INFO L226 Difference]: Without dead ends: 241671 [2021-11-21 00:26:45,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:26:45,435 INFO L933 BasicCegarLoop]: 2171 mSDtfsCounter, 1160 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 3446 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:45,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 3446 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 634 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 00:26:45,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241671 states.