./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.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_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/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_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/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_d0fefe83-8512-41b4-bbf5-e5def7d235ec/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 16a9a34d40babef5c6ef3662e22f59267f6e49b89d364b5566e6d47ef433b5da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:49:42,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:49:42,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:49:42,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:49:42,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:49:42,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:49:42,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:49:42,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:49:42,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:49:42,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:49:42,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:49:42,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:49:42,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:49:42,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:49:42,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:49:42,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:49:42,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:49:42,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:49:42,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:49:42,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:49:42,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:49:42,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:49:42,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:49:42,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:49:42,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:49:42,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:49:42,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:49:42,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:49:42,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:49:42,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:49:42,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:49:42,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:49:42,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:49:42,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:49:42,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:49:42,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:49:42,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:49:42,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:49:42,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:49:42,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:49:42,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:49:42,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:49:42,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:49:42,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:49:42,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:49:42,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:49:42,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:49:42,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:49:42,843 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:49:42,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:49:42,844 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:49:42,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:49:42,845 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:49:42,846 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:49:42,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:49:42,847 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:49:42,847 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:49:42,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:49:42,848 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:49:42,848 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:49:42,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:49:42,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:49:42,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:49:42,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:49:42,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:49:42,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:49:42,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:49:42,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:49:42,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:49:42,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:49:42,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:49:42,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:42,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:49:42,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:49:42,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:49:42,853 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:49:42,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:49:42,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:49:42,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:49:42,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:49:42,855 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_d0fefe83-8512-41b4-bbf5-e5def7d235ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16a9a34d40babef5c6ef3662e22f59267f6e49b89d364b5566e6d47ef433b5da [2021-11-21 01:49:43,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:49:43,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:49:43,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:49:43,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:49:43,104 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:49:43,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-21 01:49:43,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/data/05c2ac357/629d0a6070c34914b2b99565ce29ad52/FLAG53fcedbb1 [2021-11-21 01:49:44,190 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:49:44,191 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-21 01:49:44,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/data/05c2ac357/629d0a6070c34914b2b99565ce29ad52/FLAG53fcedbb1 [2021-11-21 01:49:44,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/data/05c2ac357/629d0a6070c34914b2b99565ce29ad52 [2021-11-21 01:49:44,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:49:44,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:49:44,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:44,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:49:44,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:49:44,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:44" (1/1) ... [2021-11-21 01:49:44,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5330afc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:44, skipping insertion in model container [2021-11-21 01:49:44,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:44" (1/1) ... [2021-11-21 01:49:44,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:49:44,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:49:48,510 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_d0fefe83-8512-41b4-bbf5-e5def7d235ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463372,463385] [2021-11-21 01:49:48,513 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_d0fefe83-8512-41b4-bbf5-e5def7d235ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463517,463530] [2021-11-21 01:49:48,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:48,546 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:49:49,092 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_d0fefe83-8512-41b4-bbf5-e5def7d235ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463372,463385] [2021-11-21 01:49:49,092 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_d0fefe83-8512-41b4-bbf5-e5def7d235ec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463517,463530] [2021-11-21 01:49:49,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:49,343 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:49:49,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49 WrapperNode [2021-11-21 01:49:49,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:49,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:49,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:49:49,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:49:49,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:49,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:49,652 INFO L137 Inliner]: procedures = 518, calls = 2126, calls flagged for inlining = 214, calls inlined = 173, statements flattened = 5323 [2021-11-21 01:49:49,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:49,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:49:49,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:49:49,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:49:49,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:49,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:49,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:49,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:49,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:49,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:49,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:50,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:49:50,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:49:50,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:49:50,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:49:50,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (1/1) ... [2021-11-21 01:49:50,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:50,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:50,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:49:50,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fefe83-8512-41b4-bbf5-e5def7d235ec/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:49:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_ds_info [2021-11-21 01:49:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_ds_info [2021-11-21 01:49:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-21 01:49:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_prepare [2021-11-21 01:49:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_prepare [2021-11-21 01:49:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_prepare_ds [2021-11-21 01:49:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_prepare_ds [2021-11-21 01:49:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_write [2021-11-21 01:49:50,085 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_write [2021-11-21 01:49:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:49:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:49:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 01:49:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 01:49:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:49:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:49:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-21 01:49:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-21 01:49:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_init_commit [2021-11-21 01:49:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_init_commit [2021-11-21 01:49:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_init_decode_pages [2021-11-21 01:49:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_init_decode_pages [2021-11-21 01:49:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:49:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:49:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_lseg [2021-11-21 01:49:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_lseg [2021-11-21 01:49:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2021-11-21 01:49:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2021-11-21 01:49:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_select_ds_fh [2021-11-21 01:49:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_select_ds_fh [2021-11-21 01:49:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-21 01:49:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-21 01:49:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_LSEG [2021-11-21 01:49:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_LSEG [2021-11-21 01:49:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:49:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:49:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_read [2021-11-21 01:49:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_read [2021-11-21 01:49:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-21 01:49:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:49:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:49:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_j_index [2021-11-21 01:49:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_j_index [2021-11-21 01:49:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:49:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_104 [2021-11-21 01:49:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_104 [2021-11-21 01:49:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_count_stats [2021-11-21 01:49:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_count_stats [2021-11-21 01:49:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_104___0 [2021-11-21 01:49:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_104___0 [2021-11-21 01:49:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:49:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:49:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_get_lseg [2021-11-21 01:49:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_get_lseg [2021-11-21 01:49:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:49:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:49:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:49:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_pageio_reset_read_mds [2021-11-21 01:49:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_pageio_reset_read_mds [2021-11-21 01:49:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_recover_commit_reqs [2021-11-21 01:49:50,096 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_recover_commit_reqs [2021-11-21 01:49:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:49:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:49:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:49:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_test [2021-11-21 01:49:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_test [2021-11-21 01:49:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_write [2021-11-21 01:49:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_write [2021-11-21 01:49:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_commit_list [2021-11-21 01:49:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_commit_list [2021-11-21 01:49:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:49:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-21 01:49:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-21 01:49:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 01:49:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 01:49:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_layout_hdr [2021-11-21 01:49:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_layout_hdr [2021-11-21 01:49:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:49:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:49:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_find_or_create_ds_client [2021-11-21 01:49:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_find_or_create_ds_client [2021-11-21 01:49:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:49:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:49:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 01:49:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 01:49:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-21 01:49:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-21 01:49:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_deveiceid_node [2021-11-21 01:49:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_deveiceid_node [2021-11-21 01:49:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:49:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:49:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:49:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:49:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:49:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_request_remove_commit_list [2021-11-21 01:49:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_request_remove_commit_list [2021-11-21 01:49:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-21 01:49:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2021-11-21 01:49:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-21 01:49:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-21 01:49:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-21 01:49:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-21 01:49:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:49:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_FROM_HDR [2021-11-21 01:49:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_FROM_HDR [2021-11-21 01:49:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2021-11-21 01:49:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2021-11-21 01:49:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:49:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:49:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:49:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_layout_hdr [2021-11-21 01:49:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_layout_hdr [2021-11-21 01:49:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure req_offset [2021-11-21 01:49:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure req_offset [2021-11-21 01:49:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:49:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:49:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_mark_request_commit [2021-11-21 01:49:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_mark_request_commit [2021-11-21 01:49:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:49:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:49:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 01:49:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 01:49:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-21 01:49:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-21 01:49:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:49:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:49:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure _filelayout_free_lseg [2021-11-21 01:49:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure _filelayout_free_lseg [2021-11-21 01:49:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_lseg [2021-11-21 01:49:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_lseg [2021-11-21 01:49:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:49:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:49:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_set_rw_stateid [2021-11-21 01:49:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_set_rw_stateid [2021-11-21 01:49:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:49:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:49:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:49:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:49:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:49:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:49:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:49:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:49:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_count_stats [2021-11-21 01:49:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_count_stats [2021-11-21 01:49:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_DEVID_NODE [2021-11-21 01:49:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_DEVID_NODE [2021-11-21 01:49:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_resend_writes [2021-11-21 01:49:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_resend_writes [2021-11-21 01:49:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_sequence_done [2021-11-21 01:49:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_sequence_done [2021-11-21 01:49:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_free_deviceid [2021-11-21 01:49:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_free_deviceid [2021-11-21 01:49:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_retry_commit [2021-11-21 01:49:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_retry_commit [2021-11-21 01:49:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_scan_commit_lists [2021-11-21 01:49:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_scan_commit_lists [2021-11-21 01:49:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_fenceme [2021-11-21 01:49:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_fenceme [2021-11-21 01:49:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_pagelist [2021-11-21 01:49:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_pagelist [2021-11-21 01:49:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_put_lseg [2021-11-21 01:49:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_put_lseg [2021-11-21 01:49:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-21 01:49:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-21 01:49:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2021-11-21 01:49:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2021-11-21 01:49:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_count_stats [2021-11-21 01:49:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_count_stats [2021-11-21 01:49:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_read [2021-11-21 01:49:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_read [2021-11-21 01:49:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_exit [2021-11-21 01:49:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_exit [2021-11-21 01:49:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:49:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:49:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-21 01:49:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-21 01:49:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_count_iostats [2021-11-21 01:49:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_count_iostats [2021-11-21 01:49:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_clear_request_commit [2021-11-21 01:49:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_clear_request_commit [2021-11-21 01:49:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:49:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:49:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:49:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_FILEID [2021-11-21 01:49:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_FILEID [2021-11-21 01:49:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_ds_index [2021-11-21 01:49:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_ds_index [2021-11-21 01:49:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_dserver_offset [2021-11-21 01:49:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_dserver_offset [2021-11-21 01:49:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:49:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_put_deviceid [2021-11-21 01:49:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_put_deviceid [2021-11-21 01:49:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-21 01:49:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-21 01:49:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:49:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_prepare [2021-11-21 01:49:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_prepare [2021-11-21 01:49:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2021-11-21 01:49:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2021-11-21 01:49:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 01:49:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 01:49:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:49:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:49:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_put_client [2021-11-21 01:49:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_put_client [2021-11-21 01:49:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:49:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:49:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-21 01:49:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-21 01:49:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:49:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:49:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-21 01:49:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-21 01:49:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_setup_sequence [2021-11-21 01:49:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_setup_sequence [2021-11-21 01:49:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:49:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:49:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_commitdata_alloc [2021-11-21 01:49:50,134 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_commitdata_alloc [2021-11-21 01:49:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_set_scratch_buffer [2021-11-21 01:49:50,134 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_set_scratch_buffer [2021-11-21 01:49:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_pagelist [2021-11-21 01:49:50,134 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_pagelist [2021-11-21 01:49:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:49:50,135 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:49:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:49:50,135 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:49:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-21 01:49:50,135 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-21 01:49:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:49:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_fh_array [2021-11-21 01:49:50,135 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_fh_array [2021-11-21 01:49:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_pagelist [2021-11-21 01:49:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_pagelist [2021-11-21 01:49:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:49:50,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:49:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_initiate_commit [2021-11-21 01:49:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_initiate_commit [2021-11-21 01:49:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-21 01:49:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:49:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:49:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_103 [2021-11-21 01:49:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_103 [2021-11-21 01:49:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 01:49:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 01:49:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_print_deviceid [2021-11-21 01:49:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_print_deviceid [2021-11-21 01:49:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:49:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:49:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_update_layout [2021-11-21 01:49:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_update_layout [2021-11-21 01:49:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:49:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:49:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-21 01:49:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-21 01:49:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-21 01:49:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-21 01:49:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_mark_deviceid_unavailable [2021-11-21 01:49:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_mark_deviceid_unavailable [2021-11-21 01:49:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_test_devid_unavailable [2021-11-21 01:49:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_test_devid_unavailable [2021-11-21 01:49:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:49:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 01:49:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 01:49:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_prepare [2021-11-21 01:49:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_prepare [2021-11-21 01:49:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:49:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:49:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_to_mds [2021-11-21 01:49:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_to_mds [2021-11-21 01:49:51,155 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:49:51,159 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:49:51,608 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:49:54,332 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:49:54,428 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:49:55,470 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:49:55,470 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:49:55,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:55 BoogieIcfgContainer [2021-11-21 01:49:55,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:49:55,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:49:55,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:49:55,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:49:55,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:44" (1/3) ... [2021-11-21 01:49:55,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c1c1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:55, skipping insertion in model container [2021-11-21 01:49:55,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:49" (2/3) ... [2021-11-21 01:49:55,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c1c1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:55, skipping insertion in model container [2021-11-21 01:49:55,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:55" (3/3) ... [2021-11-21 01:49:55,484 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-21 01:49:55,489 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:49:55,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:49:55,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:49:55,548 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:49:55,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:49:55,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 1742 states, 1015 states have (on average 1.3024630541871922) internal successors, (1322), 1063 states have internal predecessors, (1322), 602 states have call successors, (602), 125 states have call predecessors, (602), 124 states have return successors, (596), 573 states have call predecessors, (596), 596 states have call successors, (596) [2021-11-21 01:49:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-21 01:49:55,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:55,641 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:55,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:49:55,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash -226838321, now seen corresponding path program 1 times [2021-11-21 01:49:55,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:55,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898581304] [2021-11-21 01:49:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:55,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-11-21 01:49:56,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:56,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898581304] [2021-11-21 01:49:56,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898581304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:56,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:56,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:49:56,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930510104] [2021-11-21 01:49:56,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:56,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:49:56,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:49:56,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:49:56,505 INFO L87 Difference]: Start difference. First operand has 1742 states, 1015 states have (on average 1.3024630541871922) internal successors, (1322), 1063 states have internal predecessors, (1322), 602 states have call successors, (602), 125 states have call predecessors, (602), 124 states have return successors, (596), 573 states have call predecessors, (596), 596 states have call successors, (596) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:49:57,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:57,978 INFO L93 Difference]: Finished difference Result 5017 states and 7329 transitions. [2021-11-21 01:49:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:49:57,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 366 [2021-11-21 01:49:57,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:58,040 INFO L225 Difference]: With dead ends: 5017 [2021-11-21 01:49:58,043 INFO L226 Difference]: Without dead ends: 3279 [2021-11-21 01:49:58,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:49:58,067 INFO L933 BasicCegarLoop]: 2752 mSDtfsCounter, 2302 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 4917 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:58,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2302 Valid, 4917 Invalid, 672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 01:49:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-11-21 01:49:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3275. [2021-11-21 01:49:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 1938 states have (on average 1.2966976264189887) internal successors, (2513), 2034 states have internal predecessors, (2513), 1092 states have call successors, (1092), 244 states have call predecessors, (1092), 244 states have return successors, (1092), 1044 states have call predecessors, (1092), 1092 states have call successors, (1092) [2021-11-21 01:49:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4697 transitions. [2021-11-21 01:49:58,371 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4697 transitions. Word has length 366 [2021-11-21 01:49:58,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:58,373 INFO L470 AbstractCegarLoop]: Abstraction has 3275 states and 4697 transitions. [2021-11-21 01:49:58,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:49:58,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4697 transitions. [2021-11-21 01:49:58,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-21 01:49:58,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:58,384 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:58,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:49:58,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:49:58,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash -968352766, now seen corresponding path program 1 times [2021-11-21 01:49:58,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:49:58,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305627624] [2021-11-21 01:49:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:58,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:49:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-11-21 01:49:58,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:49:58,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305627624] [2021-11-21 01:49:58,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305627624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:58,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:58,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:49:58,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925668696] [2021-11-21 01:49:58,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:58,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:49:58,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:49:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:49:58,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:49:58,632 INFO L87 Difference]: Start difference. First operand 3275 states and 4697 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:50:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:00,144 INFO L93 Difference]: Finished difference Result 8804 states and 12564 transitions. [2021-11-21 01:50:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:00,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 367 [2021-11-21 01:50:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:00,187 INFO L225 Difference]: With dead ends: 8804 [2021-11-21 01:50:00,187 INFO L226 Difference]: Without dead ends: 5598 [2021-11-21 01:50:00,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:00,202 INFO L933 BasicCegarLoop]: 3475 mSDtfsCounter, 2238 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 5578 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:00,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2238 Valid, 5578 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:50:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5598 states. [2021-11-21 01:50:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5598 to 5594. [2021-11-21 01:50:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 3296 states have (on average 1.2915655339805825) internal successors, (4257), 3473 states have internal predecessors, (4257), 1850 states have call successors, (1850), 447 states have call predecessors, (1850), 447 states have return successors, (1850), 1753 states have call predecessors, (1850), 1850 states have call successors, (1850) [2021-11-21 01:50:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 7957 transitions. [2021-11-21 01:50:00,534 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 7957 transitions. Word has length 367 [2021-11-21 01:50:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:00,535 INFO L470 AbstractCegarLoop]: Abstraction has 5594 states and 7957 transitions. [2021-11-21 01:50:00,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:50:00,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 7957 transitions. [2021-11-21 01:50:00,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-11-21 01:50:00,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:00,548 INFO L514 BasicCegarLoop]: trace histogram [36, 34, 34, 34, 34, 34, 34, 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] [2021-11-21 01:50:00,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:50:00,549 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2052461169, now seen corresponding path program 1 times [2021-11-21 01:50:00,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:00,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341959983] [2021-11-21 01:50:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:00,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4629 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4626 trivial. 0 not checked. [2021-11-21 01:50:00,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:00,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341959983] [2021-11-21 01:50:00,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341959983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:00,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:00,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:00,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598957113] [2021-11-21 01:50:00,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:00,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:00,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:00,783 INFO L87 Difference]: Start difference. First operand 5594 states and 7957 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-21 01:50:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:01,982 INFO L93 Difference]: Finished difference Result 11864 states and 16808 transitions. [2021-11-21 01:50:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:01,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 383 [2021-11-21 01:50:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:02,042 INFO L225 Difference]: With dead ends: 11864 [2021-11-21 01:50:02,042 INFO L226 Difference]: Without dead ends: 6339 [2021-11-21 01:50:02,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:02,071 INFO L933 BasicCegarLoop]: 2375 mSDtfsCounter, 983 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:02,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 4493 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:50:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2021-11-21 01:50:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 6337. [2021-11-21 01:50:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6337 states, 3723 states have (on average 1.2857910287402632) internal successors, (4787), 3930 states have internal predecessors, (4787), 2080 states have call successors, (2080), 533 states have call predecessors, (2080), 533 states have return successors, (2080), 1961 states have call predecessors, (2080), 2080 states have call successors, (2080) [2021-11-21 01:50:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 8947 transitions. [2021-11-21 01:50:02,579 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 8947 transitions. Word has length 383 [2021-11-21 01:50:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:02,580 INFO L470 AbstractCegarLoop]: Abstraction has 6337 states and 8947 transitions. [2021-11-21 01:50:02,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-21 01:50:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 8947 transitions. [2021-11-21 01:50:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-11-21 01:50:02,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:02,598 INFO L514 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 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] [2021-11-21 01:50:02,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:50:02,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:02,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1331008247, now seen corresponding path program 1 times [2021-11-21 01:50:02,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:02,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114634075] [2021-11-21 01:50:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:02,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4832 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2021-11-21 01:50:02,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:02,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114634075] [2021-11-21 01:50:02,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114634075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:02,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:02,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:02,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074446859] [2021-11-21 01:50:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:02,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:02,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:02,923 INFO L87 Difference]: Start difference. First operand 6337 states and 8947 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 01:50:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:04,429 INFO L93 Difference]: Finished difference Result 17980 states and 25387 transitions. [2021-11-21 01:50:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:04,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 403 [2021-11-21 01:50:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:04,530 INFO L225 Difference]: With dead ends: 17980 [2021-11-21 01:50:04,530 INFO L226 Difference]: Without dead ends: 11712 [2021-11-21 01:50:04,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:04,562 INFO L933 BasicCegarLoop]: 2669 mSDtfsCounter, 2278 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 4787 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:04,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2278 Valid, 4787 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:50:04,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11712 states. [2021-11-21 01:50:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 11702. [2021-11-21 01:50:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11702 states, 6897 states have (on average 1.2870813397129186) internal successors, (8877), 7289 states have internal predecessors, (8877), 3816 states have call successors, (3816), 988 states have call predecessors, (3816), 988 states have return successors, (3816), 3592 states have call predecessors, (3816), 3816 states have call successors, (3816) [2021-11-21 01:50:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11702 states to 11702 states and 16509 transitions. [2021-11-21 01:50:05,346 INFO L78 Accepts]: Start accepts. Automaton has 11702 states and 16509 transitions. Word has length 403 [2021-11-21 01:50:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:05,348 INFO L470 AbstractCegarLoop]: Abstraction has 11702 states and 16509 transitions. [2021-11-21 01:50:05,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 01:50:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 11702 states and 16509 transitions. [2021-11-21 01:50:05,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-21 01:50:05,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:05,362 INFO L514 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 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] [2021-11-21 01:50:05,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:50:05,363 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1640742344, now seen corresponding path program 1 times [2021-11-21 01:50:05,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:05,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216124470] [2021-11-21 01:50:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:05,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4832 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4832 trivial. 0 not checked. [2021-11-21 01:50:05,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:05,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216124470] [2021-11-21 01:50:05,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216124470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:05,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:05,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:05,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224606334] [2021-11-21 01:50:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:05,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:05,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:05,613 INFO L87 Difference]: Start difference. First operand 11702 states and 16509 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 01:50:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:07,394 INFO L93 Difference]: Finished difference Result 33973 states and 47916 transitions. [2021-11-21 01:50:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:07,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 407 [2021-11-21 01:50:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:07,526 INFO L225 Difference]: With dead ends: 33973 [2021-11-21 01:50:07,526 INFO L226 Difference]: Without dead ends: 22340 [2021-11-21 01:50:07,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:07,582 INFO L933 BasicCegarLoop]: 2709 mSDtfsCounter, 2279 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 4827 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:07,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2279 Valid, 4827 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:50:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22340 states. [2021-11-21 01:50:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22340 to 22330. [2021-11-21 01:50:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22330 states, 13191 states have (on average 1.2869380638314003) internal successors, (16976), 13953 states have internal predecessors, (16976), 7240 states have call successors, (7240), 1898 states have call predecessors, (7240), 1898 states have return successors, (7240), 6806 states have call predecessors, (7240), 7240 states have call successors, (7240) [2021-11-21 01:50:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22330 states to 22330 states and 31456 transitions. [2021-11-21 01:50:08,941 INFO L78 Accepts]: Start accepts. Automaton has 22330 states and 31456 transitions. Word has length 407 [2021-11-21 01:50:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:08,942 INFO L470 AbstractCegarLoop]: Abstraction has 22330 states and 31456 transitions. [2021-11-21 01:50:08,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 01:50:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 22330 states and 31456 transitions. [2021-11-21 01:50:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2021-11-21 01:50:08,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:08,960 INFO L514 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:08,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:50:08,960 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1697729722, now seen corresponding path program 1 times [2021-11-21 01:50:08,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:08,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888664193] [2021-11-21 01:50:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:08,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4836 trivial. 0 not checked. [2021-11-21 01:50:09,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:09,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888664193] [2021-11-21 01:50:09,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888664193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:09,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:09,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:09,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442890539] [2021-11-21 01:50:09,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:09,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:09,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:09,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:09,209 INFO L87 Difference]: Start difference. First operand 22330 states and 31456 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-21 01:50:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:12,065 INFO L93 Difference]: Finished difference Result 63883 states and 90066 transitions. [2021-11-21 01:50:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:12,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 410 [2021-11-21 01:50:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:12,262 INFO L225 Difference]: With dead ends: 63883 [2021-11-21 01:50:12,263 INFO L226 Difference]: Without dead ends: 41622 [2021-11-21 01:50:12,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:12,345 INFO L933 BasicCegarLoop]: 3034 mSDtfsCounter, 2280 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:12,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2280 Valid, 5152 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:50:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41622 states. [2021-11-21 01:50:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41622 to 41612. [2021-11-21 01:50:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41612 states, 24694 states have (on average 1.2870737831052077) internal successors, (31783), 26077 states have internal predecessors, (31783), 13418 states have call successors, (13418), 3499 states have call predecessors, (13418), 3499 states have return successors, (13418), 12657 states have call predecessors, (13418), 13418 states have call successors, (13418) [2021-11-21 01:50:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41612 states to 41612 states and 58619 transitions. [2021-11-21 01:50:14,921 INFO L78 Accepts]: Start accepts. Automaton has 41612 states and 58619 transitions. Word has length 410 [2021-11-21 01:50:14,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:14,945 INFO L470 AbstractCegarLoop]: Abstraction has 41612 states and 58619 transitions. [2021-11-21 01:50:14,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-21 01:50:14,945 INFO L276 IsEmpty]: Start isEmpty. Operand 41612 states and 58619 transitions. [2021-11-21 01:50:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-21 01:50:14,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:14,969 INFO L514 BasicCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2021-11-21 01:50:14,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:50:14,970 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 333151584, now seen corresponding path program 1 times [2021-11-21 01:50:14,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:14,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564964221] [2021-11-21 01:50:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:14,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4791 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4784 trivial. 0 not checked. [2021-11-21 01:50:15,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:15,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564964221] [2021-11-21 01:50:15,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564964221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:15,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:15,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:15,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563052984] [2021-11-21 01:50:15,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:15,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:15,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:15,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:15,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:15,253 INFO L87 Difference]: Start difference. First operand 41612 states and 58619 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 01:50:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:18,369 INFO L93 Difference]: Finished difference Result 100111 states and 140793 transitions. [2021-11-21 01:50:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2021-11-21 01:50:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:18,848 INFO L225 Difference]: With dead ends: 100111 [2021-11-21 01:50:18,848 INFO L226 Difference]: Without dead ends: 58615 [2021-11-21 01:50:18,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:18,959 INFO L933 BasicCegarLoop]: 3227 mSDtfsCounter, 2238 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:18,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2238 Valid, 5328 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:50:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58615 states. [2021-11-21 01:50:21,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58615 to 58597. [2021-11-21 01:50:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58597 states, 34690 states have (on average 1.2841452868261747) internal successors, (44547), 36698 states have internal predecessors, (44547), 18851 states have call successors, (18851), 5055 states have call predecessors, (18851), 5055 states have return successors, (18851), 17709 states have call predecessors, (18851), 18851 states have call successors, (18851) [2021-11-21 01:50:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58597 states to 58597 states and 82249 transitions. [2021-11-21 01:50:21,783 INFO L78 Accepts]: Start accepts. Automaton has 58597 states and 82249 transitions. Word has length 411 [2021-11-21 01:50:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:21,784 INFO L470 AbstractCegarLoop]: Abstraction has 58597 states and 82249 transitions. [2021-11-21 01:50:21,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 01:50:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 58597 states and 82249 transitions. [2021-11-21 01:50:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-21 01:50:21,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:21,791 INFO L514 BasicCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2021-11-21 01:50:21,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:50:21,792 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:21,793 INFO L85 PathProgramCache]: Analyzing trace with hash -788534895, now seen corresponding path program 1 times [2021-11-21 01:50:21,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624594157] [2021-11-21 01:50:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:21,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4791 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4784 trivial. 0 not checked. [2021-11-21 01:50:22,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:22,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624594157] [2021-11-21 01:50:22,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624594157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:22,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:22,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:50:22,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381094823] [2021-11-21 01:50:22,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:22,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:50:22,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:22,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:50:22,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:22,326 INFO L87 Difference]: Start difference. First operand 58597 states and 82249 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 01:50:25,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:25,682 INFO L93 Difference]: Finished difference Result 139042 states and 194679 transitions. [2021-11-21 01:50:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:50:25,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 412 [2021-11-21 01:50:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:26,036 INFO L225 Difference]: With dead ends: 139042 [2021-11-21 01:50:26,037 INFO L226 Difference]: Without dead ends: 80561 [2021-11-21 01:50:26,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:50:26,200 INFO L933 BasicCegarLoop]: 3262 mSDtfsCounter, 2237 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 5363 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:26,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2237 Valid, 5363 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:50:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80561 states. [2021-11-21 01:50:29,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80561 to 80543. [2021-11-21 01:50:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80543 states, 47527 states have (on average 1.280093420581985) internal successors, (60839), 50401 states have internal predecessors, (60839), 25817 states have call successors, (25817), 7198 states have call predecessors, (25817), 7198 states have return successors, (25817), 24109 states have call predecessors, (25817), 25817 states have call successors, (25817) [2021-11-21 01:50:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80543 states to 80543 states and 112473 transitions. [2021-11-21 01:50:29,575 INFO L78 Accepts]: Start accepts. Automaton has 80543 states and 112473 transitions. Word has length 412 [2021-11-21 01:50:29,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:29,576 INFO L470 AbstractCegarLoop]: Abstraction has 80543 states and 112473 transitions. [2021-11-21 01:50:29,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 01:50:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 80543 states and 112473 transitions. [2021-11-21 01:50:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-11-21 01:50:29,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:29,593 INFO L514 BasicCegarLoop]: trace histogram [40, 34, 34, 34, 34, 34, 34, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:29,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:50:29,594 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:29,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash 156956659, now seen corresponding path program 1 times [2021-11-21 01:50:29,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:29,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533351736] [2021-11-21 01:50:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:29,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4941 trivial. 0 not checked. [2021-11-21 01:50:29,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:29,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533351736] [2021-11-21 01:50:29,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533351736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:29,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:29,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:50:29,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724640349] [2021-11-21 01:50:29,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:29,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:50:29,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:50:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:50:29,828 INFO L87 Difference]: Start difference. First operand 80543 states and 112473 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 01:50:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:39,131 INFO L93 Difference]: Finished difference Result 283171 states and 394533 transitions. [2021-11-21 01:50:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:50:39,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 429 [2021-11-21 01:50:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:40,272 INFO L225 Difference]: With dead ends: 283171 [2021-11-21 01:50:40,272 INFO L226 Difference]: Without dead ends: 202744 [2021-11-21 01:50:40,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:50:40,514 INFO L933 BasicCegarLoop]: 3659 mSDtfsCounter, 7078 mSDsluCounter, 5522 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 2345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7078 SdHoareTripleChecker+Valid, 8614 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2345 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:40,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7078 Valid, 8614 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2345 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:50:40,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202744 states. [2021-11-21 01:50:48,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202744 to 202530. [2021-11-21 01:50:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202530 states, 119222 states have (on average 1.2774068544396169) internal successors, (152295), 126356 states have internal predecessors, (152295), 64831 states have call successors, (64831), 18476 states have call predecessors, (64831), 18476 states have return successors, (64831), 60629 states have call predecessors, (64831), 64831 states have call successors, (64831) [2021-11-21 01:50:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202530 states to 202530 states and 281957 transitions. [2021-11-21 01:50:50,015 INFO L78 Accepts]: Start accepts. Automaton has 202530 states and 281957 transitions. Word has length 429 [2021-11-21 01:50:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:50,016 INFO L470 AbstractCegarLoop]: Abstraction has 202530 states and 281957 transitions. [2021-11-21 01:50:50,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 01:50:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 202530 states and 281957 transitions. [2021-11-21 01:50:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-21 01:50:50,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:50,042 INFO L514 BasicCegarLoop]: trace histogram [40, 34, 34, 34, 34, 34, 34, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:50,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:50:50,042 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1821227038, now seen corresponding path program 1 times [2021-11-21 01:50:50,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465485099] [2021-11-21 01:50:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:50,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4941 trivial. 0 not checked. [2021-11-21 01:50:50,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:50,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465485099] [2021-11-21 01:50:50,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465485099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:50,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:50,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:50:50,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952927190] [2021-11-21 01:50:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:50,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:50:50,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:50:50,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:50:50,326 INFO L87 Difference]: Start difference. First operand 202530 states and 281957 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43)