./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4c72fad0f4736d2d4eb53bca18880400af0864c4b127cd0e90e1329def3f1884 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:13:07,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:13:07,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:13:07,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:13:07,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:13:07,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:13:07,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:13:07,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:13:07,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:13:07,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:13:07,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:13:07,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:13:07,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:13:07,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:13:07,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:13:07,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:13:07,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:13:07,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:13:07,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:13:07,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:13:07,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:13:07,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:13:07,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:13:07,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:13:07,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:13:07,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:13:07,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:13:07,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:13:07,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:13:07,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:13:07,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:13:07,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:13:07,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:13:07,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:13:07,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:13:07,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:13:07,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:13:07,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:13:07,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:13:07,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:13:07,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:13:07,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:13:07,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:13:07,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:13:07,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:13:07,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:13:07,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:13:07,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:13:07,909 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:13:07,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:13:07,909 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:13:07,910 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:13:07,910 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:13:07,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:13:07,910 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:13:07,910 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:13:07,910 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:13:07,911 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:13:07,911 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:13:07,911 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:13:07,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:13:07,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:13:07,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:13:07,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:13:07,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:13:07,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:13:07,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:13:07,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:13:07,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:13:07,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:13:07,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:13:07,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:07,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:13:07,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:13:07,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:13:07,919 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:13:07,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:13:07,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:13:07,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:13:07,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:13:07,921 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_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c72fad0f4736d2d4eb53bca18880400af0864c4b127cd0e90e1329def3f1884 [2021-11-20 23:13:08,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:13:08,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:13:08,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:13:08,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:13:08,247 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:13:08,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i [2021-11-20 23:13:08,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/data/0424bd5a4/b019525f34a74bfcac8917028d120ac6/FLAG7f32d5cb5 [2021-11-20 23:13:09,295 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:13:09,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i [2021-11-20 23:13:09,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/data/0424bd5a4/b019525f34a74bfcac8917028d120ac6/FLAG7f32d5cb5 [2021-11-20 23:13:09,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/data/0424bd5a4/b019525f34a74bfcac8917028d120ac6 [2021-11-20 23:13:09,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:13:09,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:13:09,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:09,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:13:09,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:13:09,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:09" (1/1) ... [2021-11-20 23:13:09,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177233ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:09, skipping insertion in model container [2021-11-20 23:13:09,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:09" (1/1) ... [2021-11-20 23:13:09,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:13:09,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:13:12,764 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_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[379788,379801] [2021-11-20 23:13:12,784 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_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[379954,379967] [2021-11-20 23:13:12,785 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_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[380118,380131] [2021-11-20 23:13:12,787 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_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[380283,380296] [2021-11-20 23:13:12,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:12,932 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:13:13,296 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_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[379788,379801] [2021-11-20 23:13:13,296 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_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[379954,379967] [2021-11-20 23:13:13,298 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_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[380118,380131] [2021-11-20 23:13:13,298 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_14904503-fc84-46db-8171-191bc952b157/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i[380283,380296] [2021-11-20 23:13:13,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:13,535 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:13:13,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13 WrapperNode [2021-11-20 23:13:13,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:13,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:13,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:13:13,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:13:13,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:13,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:13,902 INFO L137 Inliner]: procedures = 413, calls = 2523, calls flagged for inlining = 243, calls inlined = 230, statements flattened = 7164 [2021-11-20 23:13:13,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:13,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:13:13,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:13:13,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:13:13,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:13,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:13,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:13,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:14,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:14,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:14,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:14,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:13:14,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:13:14,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:13:14,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:13:14,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (1/1) ... [2021-11-20 23:13:14,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:14,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:14,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:13:14,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14904503-fc84-46db-8171-191bc952b157/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:13:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_has_diversity [2021-11-20 23:13:14,444 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_has_diversity [2021-11-20 23:13:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:13:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:13:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_acf_status [2021-11-20 23:13:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:13:14,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:13:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_ctrl [2021-11-20 23:13:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_ctrl [2021-11-20 23:13:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:13:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:13:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_probe [2021-11-20 23:13:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_probe [2021-11-20 23:13:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_am_acf_status [2021-11-20 23:13:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_phase_div_status [2021-11-20 23:13:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:13:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:13:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-20 23:13:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-20 23:13:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:13:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:13:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_lock [2021-11-20 23:13:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_lock [2021-11-20 23:13:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:13:14,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:13:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-20 23:13:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-20 23:13:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_acf_blob [2021-11-20 23:13:14,449 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_acf_blob [2021-11-20 23:13:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:13:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_rsq_status [2021-11-20 23:13:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:13:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2021-11-20 23:13:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2021-11-20 23:13:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:13:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:13:14,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:13:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_remove [2021-11-20 23:13:14,451 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_remove [2021-11-20 23:13:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:13:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:13:14,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:13:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:13:14,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:13:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-11-20 23:13:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-11-20 23:13:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_has_am [2021-11-20 23:13:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_has_am [2021-11-20 23:13:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_fops_read [2021-11-20 23:13:14,454 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_fops_read [2021-11-20 23:13:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-20 23:13:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2021-11-20 23:13:14,455 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_tuner [2021-11-20 23:13:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_tuner [2021-11-20 23:13:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_change_func [2021-11-20 23:13:14,456 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_change_func [2021-11-20 23:13:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_frequency [2021-11-20 23:13:14,456 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_frequency [2021-11-20 23:13:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:13:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:13:14,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:13:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:13:14,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:13:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:13:14,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:13:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_5 [2021-11-20 23:13:14,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_5 [2021-11-20 23:13:14,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-20 23:13:14,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-20 23:13:14,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_6 [2021-11-20 23:13:14,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_6 [2021-11-20 23:13:14,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:13:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_to_v4l2 [2021-11-20 23:13:14,460 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_to_v4l2 [2021-11-20 23:13:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_querycap [2021-11-20 23:13:14,460 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_querycap [2021-11-20 23:13:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:13:14,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:13:14,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:13:14,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:13:14,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:13:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:13:14,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:13:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_register [2021-11-20 23:13:14,463 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_register [2021-11-20 23:13:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_lock_of_si476x_core [2021-11-20 23:13:14,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_lock_of_si476x_core [2021-11-20 23:13:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_am_seek_start [2021-11-20 23:13:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_agc_status [2021-11-20 23:13:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_g_frequency [2021-11-20 23:13:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_g_frequency [2021-11-20 23:13:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-20 23:13:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2021-11-20 23:13:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_fops_open [2021-11-20 23:13:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_fops_open [2021-11-20 23:13:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:13:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:13:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_add_new_custom [2021-11-20 23:13:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_add_new_custom [2021-11-20 23:13:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:13:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:13:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:13:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:13:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:13:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:13:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_am_tune_freq [2021-11-20 23:13:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure regmap_read [2021-11-20 23:13:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure regmap_read [2021-11-20 23:13:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_is_in_am_receiver_mode [2021-11-20 23:13:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_is_in_am_receiver_mode [2021-11-20 23:13:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_to_radio [2021-11-20 23:13:14,474 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_to_radio [2021-11-20 23:13:14,474 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:13:14,474 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:13:14,474 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_rds_blckcnt_blob [2021-11-20 23:13:14,480 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_rds_blckcnt_blob [2021-11-20 23:13:14,480 INFO L130 BoogieDeclarations]: Found specification of procedure regmap_update_bits [2021-11-20 23:13:14,480 INFO L138 BoogieDeclarations]: Found implementation of procedure regmap_update_bits [2021-11-20 23:13:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_enum_freq_bands [2021-11-20 23:13:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_enum_freq_bands [2021-11-20 23:13:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-20 23:13:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-20 23:13:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-20 23:13:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-20 23:13:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:13:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_rds_blockcount [2021-11-20 23:13:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_g_register [2021-11-20 23:13:14,482 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_g_register [2021-11-20 23:13:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:13:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_phase_diversity [2021-11-20 23:13:14,482 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_cmd_fm_phase_diversity [2021-11-20 23:13:14,482 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-20 23:13:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-20 23:13:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:13:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_to_si476x [2021-11-20 23:13:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_to_si476x [2021-11-20 23:13:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_do_post_powerup_init [2021-11-20 23:13:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_do_post_powerup_init [2021-11-20 23:13:14,483 INFO L130 BoogieDeclarations]: Found specification of procedure regmap_write [2021-11-20 23:13:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure regmap_write [2021-11-20 23:13:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_seek_start [2021-11-20 23:13:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure simple_read_from_buffer [2021-11-20 23:13:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_read_from_buffer [2021-11-20 23:13:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:13:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:13:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release_empty [2021-11-20 23:13:14,484 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release_empty [2021-11-20 23:13:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_rsq_blob [2021-11-20 23:13:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_rsq_blob [2021-11-20 23:13:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_range_is_inside_of_the_band [2021-11-20 23:13:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_range_is_inside_of_the_band [2021-11-20 23:13:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-20 23:13:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-20 23:13:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_set_power_state [2021-11-20 23:13:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_set_power_state [2021-11-20 23:13:14,486 INFO L130 BoogieDeclarations]: Found specification of procedure regcache_cache_only [2021-11-20 23:13:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure regcache_cache_only [2021-11-20 23:13:14,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-20 23:13:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-20 23:13:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-20 23:13:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-20 23:13:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_fops_release [2021-11-20 23:13:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_fops_release [2021-11-20 23:13:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:13:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_s_hw_freq_seek [2021-11-20 23:13:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_s_hw_freq_seek [2021-11-20 23:13:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_rsq_primary_blob [2021-11-20 23:13:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_rsq_primary_blob [2021-11-20 23:13:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_read_agc_blob [2021-11-20 23:13:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_read_agc_blob [2021-11-20 23:13:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:13:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:13:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std_menu [2021-11-20 23:13:14,489 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std_menu [2021-11-20 23:13:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_g_tuner [2021-11-20 23:13:14,489 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_g_tuner [2021-11-20 23:13:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_stop [2021-11-20 23:13:14,489 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_stop [2021-11-20 23:13:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_fops_poll [2021-11-20 23:13:14,491 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_fops_poll [2021-11-20 23:13:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_fm_tune_freq [2021-11-20 23:13:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_si476x_radio_driver_exit_17_2 [2021-11-20 23:13:14,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_si476x_radio_driver_exit_17_2 [2021-11-20 23:13:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_is_a_secondary_tuner [2021-11-20 23:13:14,492 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_is_a_secondary_tuner [2021-11-20 23:13:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2021-11-20 23:13:14,492 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2021-11-20 23:13:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 23:13:14,492 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 23:13:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_fh_is_singular_file [2021-11-20 23:13:14,492 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_fh_is_singular_file [2021-11-20 23:13:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:13:14,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:13:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_unlock [2021-11-20 23:13:14,493 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_core_unlock [2021-11-20 23:13:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_fh_release [2021-11-20 23:13:14,493 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_fh_release [2021-11-20 23:13:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:13:14,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:13:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2021-11-20 23:13:14,494 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2021-11-20 23:13:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_radio_g_volatile_ctrl [2021-11-20 23:13:14,494 INFO L138 BoogieDeclarations]: Found implementation of procedure si476x_radio_g_volatile_ctrl [2021-11-20 23:13:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:13:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure regcache_sync_region [2021-11-20 23:13:14,494 INFO L138 BoogieDeclarations]: Found implementation of procedure regcache_sync_region [2021-11-20 23:13:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure si476x_core_cmd_am_rsq_status [2021-11-20 23:13:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:13:14,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:13:15,744 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:13:15,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:13:15,938 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:13:23,286 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:13:23,399 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:13:24,931 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:13:24,931 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:13:24,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:24 BoogieIcfgContainer [2021-11-20 23:13:24,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:13:24,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:13:24,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:13:24,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:13:24,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:13:09" (1/3) ... [2021-11-20 23:13:24,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e0034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:24, skipping insertion in model container [2021-11-20 23:13:24,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:13" (2/3) ... [2021-11-20 23:13:24,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e0034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:24, skipping insertion in model container [2021-11-20 23:13:24,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:24" (3/3) ... [2021-11-20 23:13:24,950 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-radio-si476x.cil.i [2021-11-20 23:13:24,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:13:24,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:13:25,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:13:25,043 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 [2021-11-20 23:13:25,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:13:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 2089 states, 1292 states have (on average 1.3544891640866874) internal successors, (1750), 1295 states have internal predecessors, (1750), 704 states have call successors, (704), 91 states have call predecessors, (704), 90 states have return successors, (693), 693 states have call predecessors, (693), 693 states have call successors, (693) [2021-11-20 23:13:25,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2021-11-20 23:13:25,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:25,174 INFO L514 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:25,175 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)] === [2021-11-20 23:13:25,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash -569538716, now seen corresponding path program 1 times [2021-11-20 23:13:25,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:25,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409775279] [2021-11-20 23:13:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:25,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 19463 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19463 trivial. 0 not checked. [2021-11-20 23:13:26,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:26,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409775279] [2021-11-20 23:13:26,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409775279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:26,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:26,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:26,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033649208] [2021-11-20 23:13:26,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:26,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:26,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:26,659 INFO L87 Difference]: Start difference. First operand has 2089 states, 1292 states have (on average 1.3544891640866874) internal successors, (1750), 1295 states have internal predecessors, (1750), 704 states have call successors, (704), 91 states have call predecessors, (704), 90 states have return successors, (693), 693 states have call predecessors, (693), 693 states have call successors, (693) Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2021-11-20 23:13:30,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:32,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:33,480 INFO L93 Difference]: Finished difference Result 5891 states and 9115 transitions. [2021-11-20 23:13:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:33,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 725 [2021-11-20 23:13:33,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:33,534 INFO L225 Difference]: With dead ends: 5891 [2021-11-20 23:13:33,534 INFO L226 Difference]: Without dead ends: 3928 [2021-11-20 23:13:33,554 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 [2021-11-20 23:13:33,558 INFO L933 BasicCegarLoop]: 3298 mSDtfsCounter, 2836 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:33,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 5958 Invalid, 907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-20 23:13:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2021-11-20 23:13:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3924. [2021-11-20 23:13:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3924 states, 2460 states have (on average 1.3565040650406504) internal successors, (3337), 2465 states have internal predecessors, (3337), 1285 states have call successors, (1285), 177 states have call predecessors, (1285), 176 states have return successors, (1281), 1281 states have call predecessors, (1281), 1281 states have call successors, (1281) [2021-11-20 23:13:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 5903 transitions. [2021-11-20 23:13:34,128 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 5903 transitions. Word has length 725 [2021-11-20 23:13:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:34,131 INFO L470 AbstractCegarLoop]: Abstraction has 3924 states and 5903 transitions. [2021-11-20 23:13:34,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2021-11-20 23:13:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 5903 transitions. [2021-11-20 23:13:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2021-11-20 23:13:34,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:34,166 INFO L514 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:34,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:13:34,166 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)] === [2021-11-20 23:13:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1044504585, now seen corresponding path program 1 times [2021-11-20 23:13:34,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:34,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816744440] [2021-11-20 23:13:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:34,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19460 trivial. 0 not checked. [2021-11-20 23:13:34,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:34,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816744440] [2021-11-20 23:13:34,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816744440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:34,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:34,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:34,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982128381] [2021-11-20 23:13:34,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:34,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:34,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:34,693 INFO L87 Difference]: Start difference. First operand 3924 states and 5903 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-20 23:13:37,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:38,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:41,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:43,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:43,329 INFO L93 Difference]: Finished difference Result 9605 states and 14450 transitions. [2021-11-20 23:13:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:43,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 732 [2021-11-20 23:13:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:43,393 INFO L225 Difference]: With dead ends: 9605 [2021-11-20 23:13:43,393 INFO L226 Difference]: Without dead ends: 5822 [2021-11-20 23:13:43,416 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 [2021-11-20 23:13:43,418 INFO L933 BasicCegarLoop]: 3299 mSDtfsCounter, 2851 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2851 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:43,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2851 Valid, 5965 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 874 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-20 23:13:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2021-11-20 23:13:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5802. [2021-11-20 23:13:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5802 states, 3643 states have (on average 1.3584957452648916) internal successors, (4949), 3653 states have internal predecessors, (4949), 1891 states have call successors, (1891), 266 states have call predecessors, (1891), 265 states have return successors, (1887), 1882 states have call predecessors, (1887), 1887 states have call successors, (1887) [2021-11-20 23:13:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 8727 transitions. [2021-11-20 23:13:43,935 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 8727 transitions. Word has length 732 [2021-11-20 23:13:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:43,937 INFO L470 AbstractCegarLoop]: Abstraction has 5802 states and 8727 transitions. [2021-11-20 23:13:43,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-20 23:13:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 8727 transitions. [2021-11-20 23:13:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2021-11-20 23:13:43,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:43,952 INFO L514 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:43,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:13:43,953 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)] === [2021-11-20 23:13:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1336953691, now seen corresponding path program 1 times [2021-11-20 23:13:43,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:43,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052083476] [2021-11-20 23:13:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:43,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19460 trivial. 0 not checked. [2021-11-20 23:13:44,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052083476] [2021-11-20 23:13:44,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052083476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:44,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:44,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:44,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40084261] [2021-11-20 23:13:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:44,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:44,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:44,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:44,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:44,450 INFO L87 Difference]: Start difference. First operand 5802 states and 8727 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-20 23:13:46,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:48,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:50,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:51,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:52,746 INFO L93 Difference]: Finished difference Result 16532 states and 24882 transitions. [2021-11-20 23:13:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:52,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 741 [2021-11-20 23:13:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:52,856 INFO L225 Difference]: With dead ends: 16532 [2021-11-20 23:13:52,856 INFO L226 Difference]: Without dead ends: 10871 [2021-11-20 23:13:52,895 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 [2021-11-20 23:13:52,899 INFO L933 BasicCegarLoop]: 3376 mSDtfsCounter, 2671 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 5998 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:52,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2671 Valid, 5998 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 972 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-20 23:13:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-11-20 23:13:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 10847. [2021-11-20 23:13:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10847 states, 6794 states have (on average 1.351045039740948) internal successors, (9179), 6818 states have internal predecessors, (9179), 3541 states have call successors, (3541), 510 states have call predecessors, (3541), 509 states have return successors, (3537), 3518 states have call predecessors, (3537), 3537 states have call successors, (3537) [2021-11-20 23:13:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10847 states to 10847 states and 16257 transitions. [2021-11-20 23:13:53,638 INFO L78 Accepts]: Start accepts. Automaton has 10847 states and 16257 transitions. Word has length 741 [2021-11-20 23:13:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:53,640 INFO L470 AbstractCegarLoop]: Abstraction has 10847 states and 16257 transitions. [2021-11-20 23:13:53,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2021-11-20 23:13:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 10847 states and 16257 transitions. [2021-11-20 23:13:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2021-11-20 23:13:53,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:53,771 INFO L514 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:53,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:13:53,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:13:53,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:53,773 INFO L85 PathProgramCache]: Analyzing trace with hash -920292249, now seen corresponding path program 1 times [2021-11-20 23:13:53,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:53,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792840212] [2021-11-20 23:13:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:53,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20022 trivial. 0 not checked. [2021-11-20 23:13:54,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:54,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792840212] [2021-11-20 23:13:54,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792840212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:54,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:54,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:54,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967610480] [2021-11-20 23:13:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:54,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:54,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:54,353 INFO L87 Difference]: Start difference. First operand 10847 states and 16257 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2021-11-20 23:13:57,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:59,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:02,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:03,117 INFO L93 Difference]: Finished difference Result 28696 states and 42879 transitions. [2021-11-20 23:14:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:03,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 751 [2021-11-20 23:14:03,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:03,259 INFO L225 Difference]: With dead ends: 28696 [2021-11-20 23:14:03,260 INFO L226 Difference]: Without dead ends: 17990 [2021-11-20 23:14:03,324 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 [2021-11-20 23:14:03,325 INFO L933 BasicCegarLoop]: 3426 mSDtfsCounter, 2743 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:03,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2745 Valid, 6081 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 897 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-11-20 23:14:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17990 states. [2021-11-20 23:14:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17990 to 17950. [2021-11-20 23:14:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17950 states, 11216 states have (on average 1.3462910128388017) internal successors, (15100), 11268 states have internal predecessors, (15100), 5831 states have call successors, (5831), 905 states have call predecessors, (5831), 900 states have return successors, (5831), 5776 states have call predecessors, (5831), 5827 states have call successors, (5831) [2021-11-20 23:14:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17950 states to 17950 states and 26762 transitions. [2021-11-20 23:14:04,452 INFO L78 Accepts]: Start accepts. Automaton has 17950 states and 26762 transitions. Word has length 751 [2021-11-20 23:14:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:04,454 INFO L470 AbstractCegarLoop]: Abstraction has 17950 states and 26762 transitions. [2021-11-20 23:14:04,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2021-11-20 23:14:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 17950 states and 26762 transitions. [2021-11-20 23:14:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2021-11-20 23:14:04,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:04,472 INFO L514 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:04,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:14:04,473 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:04,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:04,475 INFO L85 PathProgramCache]: Analyzing trace with hash 933432000, now seen corresponding path program 1 times [2021-11-20 23:14:04,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:04,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537031860] [2021-11-20 23:14:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:04,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19487 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19487 trivial. 0 not checked. [2021-11-20 23:14:05,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:05,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537031860] [2021-11-20 23:14:05,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537031860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:05,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:05,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:05,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227218917] [2021-11-20 23:14:05,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:05,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:05,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:05,101 INFO L87 Difference]: Start difference. First operand 17950 states and 26762 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-20 23:14:08,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:10,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:12,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:12,990 INFO L93 Difference]: Finished difference Result 49409 states and 73696 transitions. [2021-11-20 23:14:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 766 [2021-11-20 23:14:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:13,312 INFO L225 Difference]: With dead ends: 49409 [2021-11-20 23:14:13,313 INFO L226 Difference]: Without dead ends: 31600 [2021-11-20 23:14:13,388 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 [2021-11-20 23:14:13,389 INFO L933 BasicCegarLoop]: 3294 mSDtfsCounter, 2782 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 5944 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:13,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2782 Valid, 5944 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 900 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-20 23:14:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31600 states. [2021-11-20 23:14:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31600 to 31566. [2021-11-20 23:14:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31566 states, 19798 states have (on average 1.3468027073441762) internal successors, (26664), 19914 states have internal predecessors, (26664), 10171 states have call successors, (10171), 1603 states have call predecessors, (10171), 1594 states have return successors, (10175), 10048 states have call predecessors, (10175), 10167 states have call successors, (10175) [2021-11-20 23:14:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31566 states to 31566 states and 47010 transitions. [2021-11-20 23:14:15,523 INFO L78 Accepts]: Start accepts. Automaton has 31566 states and 47010 transitions. Word has length 766 [2021-11-20 23:14:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:15,525 INFO L470 AbstractCegarLoop]: Abstraction has 31566 states and 47010 transitions. [2021-11-20 23:14:15,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-20 23:14:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 31566 states and 47010 transitions. [2021-11-20 23:14:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2021-11-20 23:14:15,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:15,541 INFO L514 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 70, 70, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:15,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:14:15,542 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:14:15,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:15,542 INFO L85 PathProgramCache]: Analyzing trace with hash 280173976, now seen corresponding path program 1 times [2021-11-20 23:14:15,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:15,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807826350] [2021-11-20 23:14:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:15,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 19487 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19487 trivial. 0 not checked. [2021-11-20 23:14:15,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807826350] [2021-11-20 23:14:15,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807826350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:15,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:15,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:14:15,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507347663] [2021-11-20 23:14:15,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:15,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:14:15,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:14:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:14:16,000 INFO L87 Difference]: Start difference. First operand 31566 states and 47010 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-20 23:14:19,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:21,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:23,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:25,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:26,060 INFO L93 Difference]: Finished difference Result 89927 states and 133938 transitions. [2021-11-20 23:14:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:14:26,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 765 [2021-11-20 23:14:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:26,559 INFO L225 Difference]: With dead ends: 89927 [2021-11-20 23:14:26,560 INFO L226 Difference]: Without dead ends: 58502 [2021-11-20 23:14:26,689 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 [2021-11-20 23:14:26,690 INFO L933 BasicCegarLoop]: 3338 mSDtfsCounter, 2783 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 5988 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:26,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2783 Valid, 5988 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-20 23:14:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58502 states. [2021-11-20 23:14:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58502 to 58468. [2021-11-20 23:14:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58468 states, 36800 states have (on average 1.3463586956521738) internal successors, (49546), 37044 states have internal predecessors, (49546), 18683 states have call successors, (18683), 2999 states have call predecessors, (18683), 2982 states have return successors, (18695), 18424 states have call predecessors, (18695), 18679 states have call successors, (18695) [2021-11-20 23:14:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58468 states to 58468 states and 86924 transitions. [2021-11-20 23:14:30,086 INFO L78 Accepts]: Start accepts. Automaton has 58468 states and 86924 transitions. Word has length 765 [2021-11-20 23:14:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:30,087 INFO L470 AbstractCegarLoop]: Abstraction has 58468 states and 86924 transitions. [2021-11-20 23:14:30,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (81), 2 states have call predecessors, (81), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-20 23:14:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 58468 states and 86924 transitions. [2021-11-20 23:14:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2021-11-20 23:14:30,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:30,376 INFO L514 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:30,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:14:30,376 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)] === [2021-11-20 23:14:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:30,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2009926355, now seen corresponding path program 1 times [2021-11-20 23:14:30,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:30,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320055085] [2021-11-20 23:14:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:30,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20022 trivial. 0 not checked. [2021-11-20 23:14:31,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:31,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320055085] [2021-11-20 23:14:31,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320055085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:31,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:31,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:14:31,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136349640] [2021-11-20 23:14:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:31,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:14:31,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:31,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:14:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:14:31,044 INFO L87 Difference]: Start difference. First operand 58468 states and 86924 transitions. Second operand has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2021-11-20 23:14:37,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:39,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:44,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:47,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:49,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:51,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:53,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:54,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:59,468 INFO L93 Difference]: Finished difference Result 223503 states and 332195 transitions. [2021-11-20 23:14:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:14:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 759 [2021-11-20 23:14:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:00,526 INFO L225 Difference]: With dead ends: 223503 [2021-11-20 23:15:00,526 INFO L226 Difference]: Without dead ends: 165176 [2021-11-20 23:15:00,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:15:00,776 INFO L933 BasicCegarLoop]: 3882 mSDtfsCounter, 8295 mSDsluCounter, 7110 mSDsCounter, 0 mSdLazyCounter, 5111 mSolverCounterSat, 1229 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8651 SdHoareTripleChecker+Valid, 9599 SdHoareTripleChecker+Invalid, 6343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1229 IncrementalHoareTripleChecker+Valid, 5111 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:00,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8651 Valid, 9599 Invalid, 6343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1229 Valid, 5111 Invalid, 3 Unknown, 0 Unchecked, 23.7s Time] [2021-11-20 23:15:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165176 states. [2021-11-20 23:15:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165176 to 164948. [2021-11-20 23:15:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164948 states, 104210 states have (on average 1.347298723730928) internal successors, (140402), 105062 states have internal predecessors, (140402), 52201 states have call successors, (52201), 8583 states have call predecessors, (52201), 8534 states have return successors, (52245), 51302 states have call predecessors, (52245), 52197 states have call successors, (52245) [2021-11-20 23:15:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164948 states to 164948 states and 244848 transitions. [2021-11-20 23:15:09,266 INFO L78 Accepts]: Start accepts. Automaton has 164948 states and 244848 transitions. Word has length 759 [2021-11-20 23:15:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:09,268 INFO L470 AbstractCegarLoop]: Abstraction has 164948 states and 244848 transitions. [2021-11-20 23:15:09,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2021-11-20 23:15:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 164948 states and 244848 transitions. [2021-11-20 23:15:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2021-11-20 23:15:09,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:09,289 INFO L514 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:09,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:15:09,289 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:15:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1392787716, now seen corresponding path program 1 times [2021-11-20 23:15:09,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:09,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979991419] [2021-11-20 23:15:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:09,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20022 trivial. 0 not checked. [2021-11-20 23:15:09,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:09,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979991419] [2021-11-20 23:15:09,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979991419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:09,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:09,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:15:09,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551496739] [2021-11-20 23:15:09,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:09,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:15:09,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:15:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:09,825 INFO L87 Difference]: Start difference. First operand 164948 states and 244848 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2021-11-20 23:15:16,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:18,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:19,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:24,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:26,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:28,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:32,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:34,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:15:45,932 INFO L93 Difference]: Finished difference Result 643603 states and 954577 transitions. [2021-11-20 23:15:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:15:45,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 762 [2021-11-20 23:15:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:15:49,136 INFO L225 Difference]: With dead ends: 643603 [2021-11-20 23:15:49,137 INFO L226 Difference]: Without dead ends: 478796 [2021-11-20 23:15:49,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:49,758 INFO L933 BasicCegarLoop]: 3573 mSDtfsCounter, 5985 mSDsluCounter, 6786 mSDsCounter, 0 mSdLazyCounter, 5201 mSolverCounterSat, 1213 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6316 SdHoareTripleChecker+Valid, 9121 SdHoareTripleChecker+Invalid, 6418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1213 IncrementalHoareTripleChecker+Valid, 5201 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:15:49,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6316 Valid, 9121 Invalid, 6418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1213 Valid, 5201 Invalid, 4 Unknown, 0 Unchecked, 22.6s Time] [2021-11-20 23:15:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478796 states.