./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a726a5193e63c1219bd87d1639e8de22edb997e98056d7c45179f71e6a8d2119 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:51:22,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:51:22,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:51:22,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:51:22,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:51:22,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:51:22,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:51:22,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:51:22,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:51:22,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:51:22,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:51:22,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:51:22,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:51:22,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:51:22,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:51:22,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:51:22,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:51:22,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:51:22,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:51:22,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:51:22,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:51:22,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:51:22,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:51:22,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:51:22,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:51:22,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:51:22,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:51:22,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:51:22,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:51:22,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:51:22,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:51:22,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:51:22,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:51:22,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:51:22,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:51:22,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:51:22,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:51:22,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:51:22,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:51:22,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:51:22,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:51:22,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 01:51:22,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:51:22,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:51:22,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:51:22,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:51:22,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:51:22,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:51:22,715 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:51:22,716 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:51:22,716 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:51:22,716 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:51:22,717 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:51:22,718 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:51:22,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:51:22,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:51:22,719 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:51:22,719 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:51:22,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:51:22,720 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:51:22,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:51:22,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:51:22,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:51:22,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:51:22,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:51:22,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:51:22,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:51:22,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:51:22,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:51:22,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:51:22,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:51:22,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:51:22,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:51:22,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:51:22,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:51:22,727 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:51:22,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:51:22,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:51:22,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:51:22,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:51:22,729 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_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a726a5193e63c1219bd87d1639e8de22edb997e98056d7c45179f71e6a8d2119 [2021-11-23 01:51:23,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:51:23,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:51:23,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:51:23,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:51:23,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:51:23,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-23 01:51:23,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/data/9a1b12c08/bdb68c4045ba4b6eb87795575f2b34a3/FLAGe6486aec0 [2021-11-23 01:51:24,624 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:51:24,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-23 01:51:24,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/data/9a1b12c08/bdb68c4045ba4b6eb87795575f2b34a3/FLAGe6486aec0 [2021-11-23 01:51:25,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/data/9a1b12c08/bdb68c4045ba4b6eb87795575f2b34a3 [2021-11-23 01:51:25,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:51:25,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:51:25,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:51:25,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:51:25,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:51:25,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:25" (1/1) ... [2021-11-23 01:51:25,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dece8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:25, skipping insertion in model container [2021-11-23 01:51:25,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:25" (1/1) ... [2021-11-23 01:51:25,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:51:25,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:51:34,355 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_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[769201,769214] [2021-11-23 01:51:34,359 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_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[769367,769380] [2021-11-23 01:51:34,361 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_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[769531,769544] [2021-11-23 01:51:34,362 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_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[769696,769709] [2021-11-23 01:51:34,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:34,574 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:51:35,717 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_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[769201,769214] [2021-11-23 01:51:35,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[769367,769380] [2021-11-23 01:51:35,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[769531,769544] [2021-11-23 01:51:35,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i[769696,769709] [2021-11-23 01:51:35,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:51:36,047 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:51:36,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36 WrapperNode [2021-11-23 01:51:36,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:51:36,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:51:36,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:51:36,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:51:36,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:36,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:37,073 INFO L137 Inliner]: procedures = 688, calls = 11589, calls flagged for inlining = 369, calls inlined = 261, statements flattened = 13294 [2021-11-23 01:51:37,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:51:37,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:51:37,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:51:37,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:51:37,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:37,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:37,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:37,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:37,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:38,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:38,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:38,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:51:38,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:51:38,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:51:38,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:51:38,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (1/1) ... [2021-11-23 01:51:38,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:51:38,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:51:38,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:51:38,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e10d6274-e399-4afc-8b9c-dafae56c9fa0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:51:38,255 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 01:51:38,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 01:51:38,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 01:51:38,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 01:51:38,256 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-23 01:51:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-23 01:51:38,257 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-23 01:51:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-23 01:51:38,257 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-23 01:51:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-23 01:51:38,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 01:51:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 01:51:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 01:51:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 01:51:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-23 01:51:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-23 01:51:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-23 01:51:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-23 01:51:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-23 01:51:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-23 01:51:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 01:51:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 01:51:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-23 01:51:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-23 01:51:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-23 01:51:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-23 01:51:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-23 01:51:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-23 01:51:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 01:51:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 01:51:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 01:51:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 01:51:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 01:51:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 01:51:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 01:51:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 01:51:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 01:51:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 01:51:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 01:51:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 01:51:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-23 01:51:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-23 01:51:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 01:51:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 01:51:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-23 01:51:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-23 01:51:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 01:51:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 01:51:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-23 01:51:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-23 01:51:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-23 01:51:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-23 01:51:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-23 01:51:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-23 01:51:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 01:51:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 01:51:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:51:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-23 01:51:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-23 01:51:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 01:51:38,270 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 01:51:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-23 01:51:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-23 01:51:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 01:51:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 01:51:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-23 01:51:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-23 01:51:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-23 01:51:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-23 01:51:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 01:51:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 01:51:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-23 01:51:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-23 01:51:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 01:51:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 01:51:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-23 01:51:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-23 01:51:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:51:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 01:51:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 01:51:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-23 01:51:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-23 01:51:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:51:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-23 01:51:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-23 01:51:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 01:51:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 01:51:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-23 01:51:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-23 01:51:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:51:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 01:51:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 01:51:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-23 01:51:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-23 01:51:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-23 01:51:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-23 01:51:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 01:51:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 01:51:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 01:51:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 01:51:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 01:51:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 01:51:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 01:51:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 01:51:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-23 01:51:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-23 01:51:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 01:51:38,288 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 01:51:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 01:51:38,288 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 01:51:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-23 01:51:38,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-23 01:51:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 01:51:38,290 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 01:51:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2021-11-23 01:51:38,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2021-11-23 01:51:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-23 01:51:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-23 01:51:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-23 01:51:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-23 01:51:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-23 01:51:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-23 01:51:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:51:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 01:51:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 01:51:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 01:51:38,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 01:51:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:51:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-23 01:51:38,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-23 01:51:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 01:51:38,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 01:51:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-23 01:51:38,301 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-23 01:51:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 01:51:38,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 01:51:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:51:38,302 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-23 01:51:38,302 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-23 01:51:38,302 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 01:51:38,302 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-23 01:51:38,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-23 01:51:38,302 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:51:38,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 01:51:38,303 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-23 01:51:38,303 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-23 01:51:38,303 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 01:51:38,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 01:51:38,303 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-23 01:51:38,304 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-23 01:51:38,304 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 01:51:38,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 01:51:38,304 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 01:51:38,304 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 01:51:38,304 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-23 01:51:38,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-23 01:51:38,305 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-23 01:51:38,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-23 01:51:38,305 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-23 01:51:38,305 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-23 01:51:38,305 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-23 01:51:38,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-23 01:51:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-23 01:51:38,306 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-23 01:51:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:51:38,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:51:38,306 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-23 01:51:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-23 01:51:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-23 01:51:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-23 01:51:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-23 01:51:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-23 01:51:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-23 01:51:38,308 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-23 01:51:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:51:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:51:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 01:51:38,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 01:51:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-23 01:51:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-23 01:51:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 01:51:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 01:51:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-23 01:51:38,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-23 01:51:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-23 01:51:38,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-23 01:51:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-23 01:51:38,310 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-23 01:51:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-23 01:51:38,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-23 01:51:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 01:51:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 01:51:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-23 01:51:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-23 01:51:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2021-11-23 01:51:38,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2021-11-23 01:51:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-23 01:51:38,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-23 01:51:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-23 01:51:38,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-23 01:51:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-23 01:51:38,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-23 01:51:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 01:51:38,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 01:51:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-23 01:51:38,313 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-23 01:51:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-23 01:51:38,313 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-23 01:51:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 01:51:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 01:51:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 01:51:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 01:51:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 01:51:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 01:51:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-23 01:51:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-23 01:51:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 01:51:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 01:51:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-23 01:51:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-23 01:51:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 01:51:38,316 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 01:51:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 01:51:38,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 01:51:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:51:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-23 01:51:38,317 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-23 01:51:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 01:51:38,317 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 01:51:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-23 01:51:38,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-23 01:51:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:51:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-23 01:51:38,322 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-23 01:51:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-23 01:51:38,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-23 01:51:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-23 01:51:38,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-23 01:51:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-23 01:51:38,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-23 01:51:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-23 01:51:38,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-23 01:51:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-23 01:51:38,325 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-23 01:51:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:51:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-23 01:51:38,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-23 01:51:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 01:51:38,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 01:51:38,326 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 01:51:38,327 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 01:51:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-23 01:51:38,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-23 01:51:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-23 01:51:38,327 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-23 01:51:38,327 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 01:51:38,328 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 01:51:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-23 01:51:38,328 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-23 01:51:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 01:51:38,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 01:51:38,328 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 01:51:38,329 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 01:51:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 01:51:38,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 01:51:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-23 01:51:38,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-23 01:51:38,329 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-23 01:51:38,330 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-23 01:51:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-23 01:51:38,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-23 01:51:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-23 01:51:38,330 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-23 01:51:38,330 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-23 01:51:38,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-23 01:51:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 01:51:38,331 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 01:51:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-23 01:51:38,331 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-23 01:51:38,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 01:51:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 01:51:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 01:51:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 01:51:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-23 01:51:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-23 01:51:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-23 01:51:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-23 01:51:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-23 01:51:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-23 01:51:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-23 01:51:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-23 01:51:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 01:51:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 01:51:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 01:51:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 01:51:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:51:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-23 01:51:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-23 01:51:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 01:51:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 01:51:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-23 01:51:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-23 01:51:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-23 01:51:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-23 01:51:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-23 01:51:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-23 01:51:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-23 01:51:38,336 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-23 01:51:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 01:51:38,336 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 01:51:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-23 01:51:38,336 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-23 01:51:38,337 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 01:51:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 01:51:38,337 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 01:51:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 01:51:38,337 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-23 01:51:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-23 01:51:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2021-11-23 01:51:38,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2021-11-23 01:51:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2021-11-23 01:51:38,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2021-11-23 01:51:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 01:51:38,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 01:51:38,338 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 01:51:38,339 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 01:51:38,339 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 01:51:38,339 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 01:51:38,339 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 01:51:38,339 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 01:51:38,339 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 01:51:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 01:51:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-23 01:51:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-23 01:51:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 01:51:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 01:51:38,340 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-23 01:51:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-23 01:51:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-23 01:51:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-23 01:51:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-23 01:51:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-23 01:51:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-23 01:51:38,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:51:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-23 01:51:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-23 01:51:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-23 01:51:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-23 01:51:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 01:51:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 01:51:38,342 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-23 01:51:38,343 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-23 01:51:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-23 01:51:38,343 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-23 01:51:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-23 01:51:38,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-23 01:51:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-23 01:51:38,439 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-23 01:51:39,707 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:51:39,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:51:55,906 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 01:54:20,225 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 01:54:20,373 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:54:25,742 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:54:25,742 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 01:54:25,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:25 BoogieIcfgContainer [2021-11-23 01:54:25,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:54:25,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:54:25,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:54:25,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:54:25,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:51:25" (1/3) ... [2021-11-23 01:54:25,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4629c340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:54:25, skipping insertion in model container [2021-11-23 01:54:25,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:36" (2/3) ... [2021-11-23 01:54:25,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4629c340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:54:25, skipping insertion in model container [2021-11-23 01:54:25,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:54:25" (3/3) ... [2021-11-23 01:54:25,758 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-23 01:54:25,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:54:25,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 01:54:25,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:54:25,855 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:54:25,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 01:54:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 2844 states, 1789 states have (on average 1.335382895472331) internal successors, (2389), 1804 states have internal predecessors, (2389), 883 states have call successors, (883), 170 states have call predecessors, (883), 169 states have return successors, (877), 876 states have call predecessors, (877), 877 states have call successors, (877) [2021-11-23 01:54:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-23 01:54:26,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:54:26,155 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 01:54:26,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:54:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:54:26,162 INFO L85 PathProgramCache]: Analyzing trace with hash -850917169, now seen corresponding path program 1 times [2021-11-23 01:54:26,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:54:26,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534276055] [2021-11-23 01:54:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:54:26,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:54:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:54:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-23 01:54:27,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:54:27,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534276055] [2021-11-23 01:54:27,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534276055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:54:27,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:54:27,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:54:27,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830340669] [2021-11-23 01:54:27,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:54:27,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:54:27,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:54:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:54:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:54:28,012 INFO L87 Difference]: Start difference. First operand has 2844 states, 1789 states have (on average 1.335382895472331) internal successors, (2389), 1804 states have internal predecessors, (2389), 883 states have call successors, (883), 170 states have call predecessors, (883), 169 states have return successors, (877), 876 states have call predecessors, (877), 877 states have call successors, (877) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-23 01:54:31,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:54:32,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:54:35,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:38,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:42,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:54:46,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:49,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:52,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:55,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:54:57,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:00,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:02,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:04,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:05,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:05,291 INFO L93 Difference]: Finished difference Result 8012 states and 11805 transitions. [2021-11-23 01:55:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:55:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 185 [2021-11-23 01:55:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:05,389 INFO L225 Difference]: With dead ends: 8012 [2021-11-23 01:55:05,390 INFO L226 Difference]: Without dead ends: 5191 [2021-11-23 01:55:05,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:55:05,440 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 3430 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 14 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 7935 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:05,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3433 Valid, 7935 Invalid, 1059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 1035 Invalid, 10 Unknown, 0 Unchecked, 36.6s Time] [2021-11-23 01:55:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2021-11-23 01:55:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5186. [2021-11-23 01:55:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 3267 states have (on average 1.3272115090296908) internal successors, (4336), 3297 states have internal predecessors, (4336), 1596 states have call successors, (1596), 321 states have call predecessors, (1596), 320 states have return successors, (1595), 1589 states have call predecessors, (1595), 1592 states have call successors, (1595) [2021-11-23 01:55:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7527 transitions. [2021-11-23 01:55:06,107 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 7527 transitions. Word has length 185 [2021-11-23 01:55:06,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:06,113 INFO L470 AbstractCegarLoop]: Abstraction has 5186 states and 7527 transitions. [2021-11-23 01:55:06,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-23 01:55:06,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 7527 transitions. [2021-11-23 01:55:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-23 01:55:06,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:06,132 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:55:06,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:55:06,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:55:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1775266747, now seen corresponding path program 1 times [2021-11-23 01:55:06,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:06,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143839263] [2021-11-23 01:55:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:06,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-23 01:55:07,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:07,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143839263] [2021-11-23 01:55:07,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143839263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:07,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:55:07,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:55:07,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080581374] [2021-11-23 01:55:07,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:07,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:55:07,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:55:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:55:07,236 INFO L87 Difference]: Start difference. First operand 5186 states and 7527 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 01:55:12,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:15,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:55:17,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:55:20,525 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:23,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:24,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:28,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:31,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:34,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:36,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:39,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:41,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:43,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:44,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:55:44,277 INFO L93 Difference]: Finished difference Result 11286 states and 16377 transitions. [2021-11-23 01:55:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:55:44,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 195 [2021-11-23 01:55:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:55:44,356 INFO L225 Difference]: With dead ends: 11286 [2021-11-23 01:55:44,356 INFO L226 Difference]: Without dead ends: 6133 [2021-11-23 01:55:44,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:55:44,402 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 2333 mSDsluCounter, 4059 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 17 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 7802 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2021-11-23 01:55:44,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2337 Valid, 7802 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1066 Invalid, 11 Unknown, 0 Unchecked, 36.6s Time] [2021-11-23 01:55:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2021-11-23 01:55:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6105. [2021-11-23 01:55:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 3907 states have (on average 1.3342718198105963) internal successors, (5213), 3939 states have internal predecessors, (5213), 1814 states have call successors, (1814), 383 states have call predecessors, (1814), 381 states have return successors, (1813), 1799 states have call predecessors, (1813), 1810 states have call successors, (1813) [2021-11-23 01:55:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 8840 transitions. [2021-11-23 01:55:44,928 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 8840 transitions. Word has length 195 [2021-11-23 01:55:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:55:44,929 INFO L470 AbstractCegarLoop]: Abstraction has 6105 states and 8840 transitions. [2021-11-23 01:55:44,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 01:55:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 8840 transitions. [2021-11-23 01:55:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-23 01:55:44,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:55:44,937 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:55:44,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:55:44,938 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:55:44,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:55:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash 473672826, now seen corresponding path program 1 times [2021-11-23 01:55:44,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:55:44,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503569935] [2021-11-23 01:55:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:55:44,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:55:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:55:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-23 01:55:45,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:55:45,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503569935] [2021-11-23 01:55:45,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503569935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:55:45,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:55:46,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:55:46,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188679346] [2021-11-23 01:55:46,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:55:46,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:55:46,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:55:46,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:55:46,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:55:46,002 INFO L87 Difference]: Start difference. First operand 6105 states and 8840 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 01:55:49,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:51,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:55:55,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:55:59,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:01,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:05,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:08,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:11,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:13,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:15,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:18,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:20,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:22,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:56:23,113 INFO L93 Difference]: Finished difference Result 15484 states and 22376 transitions. [2021-11-23 01:56:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:56:23,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 193 [2021-11-23 01:56:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:56:23,200 INFO L225 Difference]: With dead ends: 15484 [2021-11-23 01:56:23,200 INFO L226 Difference]: Without dead ends: 9412 [2021-11-23 01:56:23,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:56:23,234 INFO L933 BasicCegarLoop]: 4418 mSDtfsCounter, 3317 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 7 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 7966 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2021-11-23 01:56:23,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3321 Valid, 7966 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1041 Invalid, 12 Unknown, 0 Unchecked, 36.7s Time] [2021-11-23 01:56:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9412 states. [2021-11-23 01:56:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9412 to 9390. [2021-11-23 01:56:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9390 states, 6015 states have (on average 1.3330008312551953) internal successors, (8018), 6070 states have internal predecessors, (8018), 2764 states have call successors, (2764), 613 states have call predecessors, (2764), 608 states have return successors, (2765), 2734 states have call predecessors, (2765), 2760 states have call successors, (2765) [2021-11-23 01:56:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9390 states to 9390 states and 13547 transitions. [2021-11-23 01:56:23,847 INFO L78 Accepts]: Start accepts. Automaton has 9390 states and 13547 transitions. Word has length 193 [2021-11-23 01:56:23,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:56:23,849 INFO L470 AbstractCegarLoop]: Abstraction has 9390 states and 13547 transitions. [2021-11-23 01:56:23,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 01:56:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand 9390 states and 13547 transitions. [2021-11-23 01:56:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-23 01:56:23,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:56:23,859 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 01:56:23,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:56:23,859 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:56:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:56:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1607567577, now seen corresponding path program 1 times [2021-11-23 01:56:23,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:56:23,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8250181] [2021-11-23 01:56:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:56:23,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:56:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:56:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2021-11-23 01:56:24,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:56:24,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8250181] [2021-11-23 01:56:24,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8250181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:56:24,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:56:24,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:56:24,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100131471] [2021-11-23 01:56:24,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:56:24,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:56:24,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:56:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:56:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:56:24,956 INFO L87 Difference]: Start difference. First operand 9390 states and 13547 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 01:56:29,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:31,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:37,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:56:40,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:56:42,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:56:43,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:56:45,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:49,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:51,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:53,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:55,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:56:57,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:01,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:04,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:07,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:09,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:11,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:14,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:17,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:19,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:22,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:24,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:57:26,142 INFO L93 Difference]: Finished difference Result 15106 states and 21726 transitions. [2021-11-23 01:57:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:57:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 233 [2021-11-23 01:57:26,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:57:26,259 INFO L225 Difference]: With dead ends: 15106 [2021-11-23 01:57:26,260 INFO L226 Difference]: Without dead ends: 15104 [2021-11-23 01:57:26,269 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 [2021-11-23 01:57:26,270 INFO L933 BasicCegarLoop]: 4879 mSDtfsCounter, 3290 mSDsluCounter, 14891 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 3 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3297 SdHoareTripleChecker+Valid, 18110 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.5s IncrementalHoareTripleChecker+Time [2021-11-23 01:57:26,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3297 Valid, 18110 Invalid, 2271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2253 Invalid, 15 Unknown, 0 Unchecked, 60.5s Time] [2021-11-23 01:57:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15104 states. [2021-11-23 01:57:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15104 to 15094. [2021-11-23 01:57:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15094 states, 9637 states have (on average 1.333817578084466) internal successors, (12854), 9744 states have internal predecessors, (12854), 4431 states have call successors, (4431), 1041 states have call predecessors, (4431), 1023 states have return successors, (4432), 4358 states have call predecessors, (4432), 4423 states have call successors, (4432) [2021-11-23 01:57:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15094 states to 15094 states and 21717 transitions. [2021-11-23 01:57:27,169 INFO L78 Accepts]: Start accepts. Automaton has 15094 states and 21717 transitions. Word has length 233 [2021-11-23 01:57:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:57:27,170 INFO L470 AbstractCegarLoop]: Abstraction has 15094 states and 21717 transitions. [2021-11-23 01:57:27,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 01:57:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 15094 states and 21717 transitions. [2021-11-23 01:57:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-23 01:57:27,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:57:27,181 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 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] [2021-11-23 01:57:27,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:57:27,182 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:57:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:57:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1388394886, now seen corresponding path program 1 times [2021-11-23 01:57:27,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:57:27,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904272622] [2021-11-23 01:57:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:57:27,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:57:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:57:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2021-11-23 01:57:28,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:57:28,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904272622] [2021-11-23 01:57:28,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904272622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:57:28,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:57:28,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:57:28,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846450220] [2021-11-23 01:57:28,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:57:28,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:57:28,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:57:28,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:57:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:57:28,140 INFO L87 Difference]: Start difference. First operand 15094 states and 21717 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 01:57:32,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:35,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:42,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:57:44,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:57:48,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:57:50,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:57:51,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:57:54,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:57,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:57:59,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:01,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:04,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:06,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:09,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:14,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:17,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:20,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:22,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:25,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:27,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:30,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:58:30,950 INFO L93 Difference]: Finished difference Result 29642 states and 42779 transitions. [2021-11-23 01:58:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:58:30,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 238 [2021-11-23 01:58:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:58:31,144 INFO L225 Difference]: With dead ends: 29642 [2021-11-23 01:58:31,144 INFO L226 Difference]: Without dead ends: 29640 [2021-11-23 01:58:31,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:58:31,167 INFO L933 BasicCegarLoop]: 4915 mSDtfsCounter, 3782 mSDsluCounter, 15035 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 3 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 18308 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:58:31,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3787 Valid, 18308 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2224 Invalid, 14 Unknown, 0 Unchecked, 62.0s Time] [2021-11-23 01:58:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29640 states. [2021-11-23 01:58:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29640 to 29605. [2021-11-23 01:58:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29605 states, 18903 states have (on average 1.3338623498915516) internal successors, (25214), 19122 states have internal predecessors, (25214), 8679 states have call successors, (8679), 2059 states have call predecessors, (8679), 2020 states have return successors, (8841), 8523 states have call predecessors, (8841), 8663 states have call successors, (8841) [2021-11-23 01:58:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29605 states to 29605 states and 42734 transitions. [2021-11-23 01:58:33,133 INFO L78 Accepts]: Start accepts. Automaton has 29605 states and 42734 transitions. Word has length 238 [2021-11-23 01:58:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:58:33,135 INFO L470 AbstractCegarLoop]: Abstraction has 29605 states and 42734 transitions. [2021-11-23 01:58:33,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 01:58:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 29605 states and 42734 transitions. [2021-11-23 01:58:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-23 01:58:33,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:58:33,149 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 3, 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] [2021-11-23 01:58:33,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:58:33,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:58:33,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:58:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1500710073, now seen corresponding path program 1 times [2021-11-23 01:58:33,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:58:33,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850529768] [2021-11-23 01:58:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:58:33,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:58:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:58:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2021-11-23 01:58:34,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:58:34,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850529768] [2021-11-23 01:58:34,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850529768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:58:34,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:58:34,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:58:34,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015592295] [2021-11-23 01:58:34,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:58:34,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:58:34,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:58:34,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:58:34,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:58:34,275 INFO L87 Difference]: Start difference. First operand 29605 states and 42734 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 01:58:38,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:40,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:42,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:58:46,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:58:48,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:58:49,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:58:52,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:55,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:58:57,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:02,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:05,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:59:09,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:11,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:13,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:16,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:19,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:21,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:24,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:26,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:29,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:30,438 INFO L93 Difference]: Finished difference Result 53874 states and 77818 transitions. [2021-11-23 01:59:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:59:30,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 243 [2021-11-23 01:59:30,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:30,790 INFO L225 Difference]: With dead ends: 53874 [2021-11-23 01:59:30,791 INFO L226 Difference]: Without dead ends: 53872 [2021-11-23 01:59:30,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:59:30,824 INFO L933 BasicCegarLoop]: 4347 mSDtfsCounter, 3440 mSDsluCounter, 13745 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3449 SdHoareTripleChecker+Valid, 16595 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.8s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:30,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3449 Valid, 16595 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2003 Invalid, 16 Unknown, 0 Unchecked, 54.8s Time] [2021-11-23 01:59:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53872 states. [2021-11-23 01:59:33,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53872 to 53861. [2021-11-23 01:59:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53861 states, 34307 states have (on average 1.3338968723584108) internal successors, (45762), 34724 states have internal predecessors, (45762), 15878 states have call successors, (15878), 3759 states have call predecessors, (15878), 3673 states have return successors, (16165), 15565 states have call predecessors, (16165), 15846 states have call successors, (16165) [2021-11-23 01:59:34,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53861 states to 53861 states and 77805 transitions. [2021-11-23 01:59:34,487 INFO L78 Accepts]: Start accepts. Automaton has 53861 states and 77805 transitions. Word has length 243 [2021-11-23 01:59:34,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:34,488 INFO L470 AbstractCegarLoop]: Abstraction has 53861 states and 77805 transitions. [2021-11-23 01:59:34,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 01:59:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 53861 states and 77805 transitions. [2021-11-23 01:59:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-23 01:59:34,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:34,504 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 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] [2021-11-23 01:59:34,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:59:34,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 01:59:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:34,505 INFO L85 PathProgramCache]: Analyzing trace with hash -667468873, now seen corresponding path program 1 times [2021-11-23 01:59:34,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:59:34,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332636666] [2021-11-23 01:59:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:34,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:59:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2021-11-23 01:59:35,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:59:35,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332636666] [2021-11-23 01:59:35,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332636666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:35,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:35,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:59:35,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348750998] [2021-11-23 01:59:35,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:35,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:59:35,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:59:35,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:59:35,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:59:35,477 INFO L87 Difference]: Start difference. First operand 53861 states and 77805 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 01:59:39,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:43,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:59:44,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 01:59:48,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:51,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:52,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 01:59:58,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:01,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:04,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:06,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:09,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:11,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:14,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:15,544 INFO L93 Difference]: Finished difference Result 116687 states and 168696 transitions. [2021-11-23 02:00:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:00:15,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 243 [2021-11-23 02:00:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:16,012 INFO L225 Difference]: With dead ends: 116687 [2021-11-23 02:00:16,012 INFO L226 Difference]: Without dead ends: 67413 [2021-11-23 02:00:16,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:00:16,440 INFO L933 BasicCegarLoop]: 5636 mSDtfsCounter, 2400 mSDsluCounter, 4059 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 15 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 9211 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:16,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 9211 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1365 Invalid, 9 Unknown, 0 Unchecked, 37.8s Time] [2021-11-23 02:00:16,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67413 states. [2021-11-23 02:00:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67413 to 67247. [2021-11-23 02:00:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67247 states, 43047 states have (on average 1.3363532882663136) internal successors, (57526), 43566 states have internal predecessors, (57526), 19540 states have call successors, (19540), 4767 states have call predecessors, (19540), 4657 states have return successors, (19855), 19133 states have call predecessors, (19855), 19508 states have call successors, (19855) [2021-11-23 02:00:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67247 states to 67247 states and 96921 transitions. [2021-11-23 02:00:20,298 INFO L78 Accepts]: Start accepts. Automaton has 67247 states and 96921 transitions. Word has length 243 [2021-11-23 02:00:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:20,301 INFO L470 AbstractCegarLoop]: Abstraction has 67247 states and 96921 transitions. [2021-11-23 02:00:20,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 02:00:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 67247 states and 96921 transitions. [2021-11-23 02:00:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-23 02:00:20,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:20,317 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 4, 3, 3, 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] [2021-11-23 02:00:20,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:00:20,317 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:00:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1739826906, now seen corresponding path program 1 times [2021-11-23 02:00:20,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:00:20,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796404680] [2021-11-23 02:00:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:20,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:00:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2021-11-23 02:00:21,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:00:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796404680] [2021-11-23 02:00:21,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796404680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:21,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:21,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:00:21,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375445125] [2021-11-23 02:00:21,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:21,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:00:21,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:00:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:00:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:00:21,580 INFO L87 Difference]: Start difference. First operand 67247 states and 96921 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:00:25,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:28,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:33,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:00:34,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:00:39,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:00:43,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:00:47,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:00:51,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:53,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:55,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:57,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:00:59,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:04,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:08,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:11,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:13,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:17,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:20,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:22,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:01:23,751 INFO L93 Difference]: Finished difference Result 90136 states and 129724 transitions. [2021-11-23 02:01:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:01:23,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 248 [2021-11-23 02:01:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:01:24,363 INFO L225 Difference]: With dead ends: 90136 [2021-11-23 02:01:24,363 INFO L226 Difference]: Without dead ends: 90132 [2021-11-23 02:01:24,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:01:24,414 INFO L933 BasicCegarLoop]: 5369 mSDtfsCounter, 3484 mSDsluCounter, 16198 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3488 SdHoareTripleChecker+Valid, 19661 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:01:24,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3488 Valid, 19661 Invalid, 2634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2617 Invalid, 15 Unknown, 0 Unchecked, 59.9s Time] [2021-11-23 02:01:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90132 states. [2021-11-23 02:01:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90132 to 90085. [2021-11-23 02:01:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90085 states, 57555 states have (on average 1.3338371992007645) internal successors, (76769), 58211 states have internal predecessors, (76769), 26234 states have call successors, (26234), 6424 states have call predecessors, (26234), 6293 states have return successors, (26660), 25741 states have call predecessors, (26660), 26194 states have call successors, (26660) [2021-11-23 02:01:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90085 states to 90085 states and 129663 transitions. [2021-11-23 02:01:29,287 INFO L78 Accepts]: Start accepts. Automaton has 90085 states and 129663 transitions. Word has length 248 [2021-11-23 02:01:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:01:29,288 INFO L470 AbstractCegarLoop]: Abstraction has 90085 states and 129663 transitions. [2021-11-23 02:01:29,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:01:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 90085 states and 129663 transitions. [2021-11-23 02:01:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-23 02:01:29,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:01:29,307 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 4, 4, 4, 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] [2021-11-23 02:01:29,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:01:29,307 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:01:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:01:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1430575034, now seen corresponding path program 1 times [2021-11-23 02:01:29,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:01:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94094288] [2021-11-23 02:01:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:29,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:01:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-23 02:01:30,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:01:30,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94094288] [2021-11-23 02:01:30,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94094288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:01:30,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:01:30,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:01:30,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996116661] [2021-11-23 02:01:30,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:01:30,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:01:30,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:01:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:01:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:01:30,353 INFO L87 Difference]: Start difference. First operand 90085 states and 129663 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 02:01:34,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:38,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:01:39,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:01:43,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:45,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:50,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:53,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:57,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:59,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:01,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:04,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:06,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:09,289 INFO L93 Difference]: Finished difference Result 257396 states and 370604 transitions. [2021-11-23 02:02:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:02:09,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 248 [2021-11-23 02:02:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:10,358 INFO L225 Difference]: With dead ends: 257396 [2021-11-23 02:02:10,358 INFO L226 Difference]: Without dead ends: 167344 [2021-11-23 02:02:10,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:02:10,955 INFO L933 BasicCegarLoop]: 4505 mSDtfsCounter, 3322 mSDsluCounter, 4096 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 5 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3328 SdHoareTripleChecker+Valid, 8112 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:10,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3328 Valid, 8112 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1055 Invalid, 11 Unknown, 0 Unchecked, 33.5s Time] [2021-11-23 02:02:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167344 states. [2021-11-23 02:02:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167344 to 166933. [2021-11-23 02:02:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166933 states, 106412 states have (on average 1.3328196068112619) internal successors, (141828), 107856 states have internal predecessors, (141828), 48809 states have call successors, (48809), 11978 states have call predecessors, (48809), 11709 states have return successors, (49680), 47659 states have call predecessors, (49680), 48769 states have call successors, (49680) [2021-11-23 02:02:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166933 states to 166933 states and 240317 transitions. [2021-11-23 02:02:20,370 INFO L78 Accepts]: Start accepts. Automaton has 166933 states and 240317 transitions. Word has length 248 [2021-11-23 02:02:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:20,371 INFO L470 AbstractCegarLoop]: Abstraction has 166933 states and 240317 transitions. [2021-11-23 02:02:20,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 02:02:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 166933 states and 240317 transitions. [2021-11-23 02:02:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-23 02:02:20,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:20,385 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 5, 4, 4, 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] [2021-11-23 02:02:20,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:02:20,385 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:02:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash -901457767, now seen corresponding path program 1 times [2021-11-23 02:02:20,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:20,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067821494] [2021-11-23 02:02:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:20,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2021-11-23 02:02:21,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:21,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067821494] [2021-11-23 02:02:21,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067821494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:21,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:21,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:02:21,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552283262] [2021-11-23 02:02:21,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:21,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:02:21,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:21,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:02:21,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:02:21,762 INFO L87 Difference]: Start difference. First operand 166933 states and 240317 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:02:26,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:32,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:02:36,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:39,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:41,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:44,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:46,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:52,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:56,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:59,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:02,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:04,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:07,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:09,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:03:11,742 INFO L93 Difference]: Finished difference Result 167636 states and 241174 transitions. [2021-11-23 02:03:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:03:11,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 253 [2021-11-23 02:03:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:03:12,876 INFO L225 Difference]: With dead ends: 167636 [2021-11-23 02:03:12,876 INFO L226 Difference]: Without dead ends: 167499 [2021-11-23 02:03:12,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:03:12,940 INFO L933 BasicCegarLoop]: 4393 mSDtfsCounter, 3438 mSDsluCounter, 13864 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 2 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3442 SdHoareTripleChecker+Valid, 16732 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:03:12,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3442 Valid, 16732 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2047 Invalid, 13 Unknown, 0 Unchecked, 45.4s Time] [2021-11-23 02:03:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167499 states. [2021-11-23 02:03:20,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167499 to 167462. [2021-11-23 02:03:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167462 states, 106765 states have (on average 1.33240294103873) internal successors, (142254), 108203 states have internal predecessors, (142254), 48880 states have call successors, (48880), 12064 states have call predecessors, (48880), 11814 states have return successors, (49765), 47755 states have call predecessors, (49765), 48844 states have call successors, (49765) [2021-11-23 02:03:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167462 states to 167462 states and 240899 transitions. [2021-11-23 02:03:21,459 INFO L78 Accepts]: Start accepts. Automaton has 167462 states and 240899 transitions. Word has length 253 [2021-11-23 02:03:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:03:21,460 INFO L470 AbstractCegarLoop]: Abstraction has 167462 states and 240899 transitions. [2021-11-23 02:03:21,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 02:03:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 167462 states and 240899 transitions. [2021-11-23 02:03:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-23 02:03:21,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:03:21,484 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:03:21,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:03:21,484 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:03:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:03:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash -839503031, now seen corresponding path program 1 times [2021-11-23 02:03:21,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:03:21,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555860440] [2021-11-23 02:03:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:03:21,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:03:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:03:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1293 trivial. 0 not checked. [2021-11-23 02:03:23,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:03:23,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555860440] [2021-11-23 02:03:23,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555860440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:03:23,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:03:23,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:03:23,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671667709] [2021-11-23 02:03:23,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:03:23,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:03:23,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:03:23,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:03:23,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:03:23,158 INFO L87 Difference]: Start difference. First operand 167462 states and 240899 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 02:03:27,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:30,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:34,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:35,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:03:40,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:03:42,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:03:45,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:03:48,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:50,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:54,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:03:58,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []