./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 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF --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-63182f1 [2021-11-12 23:53:25,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:25,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:25,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:25,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:25,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:25,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:25,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:25,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:25,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:25,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:25,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:25,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:25,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:25,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:25,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:25,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:25,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:25,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:25,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:25,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:25,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:25,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:25,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:25,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:25,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:25,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:25,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:25,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:25,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:25,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:25,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:25,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:25,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:25,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:25,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:25,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:25,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:25,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:25,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:25,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:25,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:53:25,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:25,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:25,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:25,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:25,802 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:25,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:25,802 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:25,803 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:53:25,809 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:25,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:25,810 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:53:25,811 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:53:25,811 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:25,811 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:53:25,811 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:53:25,812 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:53:25,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:25,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:53:25,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:25,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:53:25,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:25,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:53:25,814 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:25,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:53:25,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:25,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:53:25,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:25,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:25,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:25,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:25,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:25,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:53:25,818 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:53:25,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:53:25,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:53:25,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:25,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:25,819 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16a9a34d40babef5c6ef3662e22f59267f6e49b89d364b5566e6d47ef433b5da [2021-11-12 23:53:26,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:26,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:26,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:26,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:26,176 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:26,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-12 23:53:26,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data/8044212c2/ca7e9cae8c8745bdb4781469c872f26e/FLAG6bd8fc53f [2021-11-12 23:53:27,440 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:53:27,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-12 23:53:27,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data/8044212c2/ca7e9cae8c8745bdb4781469c872f26e/FLAG6bd8fc53f [2021-11-12 23:53:27,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data/8044212c2/ca7e9cae8c8745bdb4781469c872f26e [2021-11-12 23:53:27,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:53:27,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:53:27,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:27,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:53:27,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:53:27,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:27" (1/1) ... [2021-11-12 23:53:27,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457b00c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:27, skipping insertion in model container [2021-11-12 23:53:27,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:27" (1/1) ... [2021-11-12 23:53:27,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:53:27,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:29,447 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:29,505 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:29,743 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:29,749 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,130 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,218 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,256 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,256 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,257 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,258 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,292 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,293 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,294 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,300 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,937 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,938 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,944 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,945 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,946 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,946 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,952 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,953 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,959 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,961 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,968 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,975 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,975 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,976 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:30,978 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:31,018 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:31,019 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:31,026 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:53:31,868 WARN L228 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/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] [2021-11-12 23:53:31,871 WARN L228 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/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] [2021-11-12 23:53:31,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:31,907 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:53:31,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23fd3ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:31, skipping insertion in model container [2021-11-12 23:53:31,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:31,908 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:53:31,910 INFO L158 Benchmark]: Toolchain (without parser) took 4253.39ms. Allocated memory was 115.3MB in the beginning and 180.4MB in the end (delta: 65.0MB). Free memory was 80.6MB in the beginning and 90.1MB in the end (delta: -9.5MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2021-11-12 23:53:31,911 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 115.3MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:53:31,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4249.94ms. Allocated memory was 115.3MB in the beginning and 180.4MB in the end (delta: 65.0MB). Free memory was 80.3MB in the beginning and 90.1MB in the end (delta: -9.7MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2021-11-12 23:53:31,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 115.3MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4249.94ms. Allocated memory was 115.3MB in the beginning and 180.4MB in the end (delta: 65.0MB). Free memory was 80.3MB in the beginning and 90.1MB in the end (delta: -9.7MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7793]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF --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-63182f1 [2021-11-12 23:53:34,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:34,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:34,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:34,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:34,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:34,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:34,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:34,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:34,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:34,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:34,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:34,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:34,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:34,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:34,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:34,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:34,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:34,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:34,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:34,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:34,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:34,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:34,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:34,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:34,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:34,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:34,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:34,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:34,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:34,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:34,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:34,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:34,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:34,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:34,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:34,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:34,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:34,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:34,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:34,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:34,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:53:34,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:34,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:34,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:34,386 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:34,386 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:34,387 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:34,387 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:34,387 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:34,387 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:34,387 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:34,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:34,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:34,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:53:34,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:34,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:53:34,391 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:34,391 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:53:34,391 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:53:34,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:53:34,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:34,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:53:34,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:34,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:53:34,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:34,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:34,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:34,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:34,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:53:34,394 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:53:34,394 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:34,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:53:34,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:34,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:34,395 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16a9a34d40babef5c6ef3662e22f59267f6e49b89d364b5566e6d47ef433b5da [2021-11-12 23:53:34,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:34,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:34,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:34,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:34,788 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:34,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-12 23:53:34,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data/2ab774902/577d2269e5d44bbdb8e94d0208e89be6/FLAGcbb63c0fb [2021-11-12 23:53:35,951 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:53:35,952 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-12 23:53:36,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data/2ab774902/577d2269e5d44bbdb8e94d0208e89be6/FLAGcbb63c0fb [2021-11-12 23:53:36,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/data/2ab774902/577d2269e5d44bbdb8e94d0208e89be6 [2021-11-12 23:53:36,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:53:36,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:53:36,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:36,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:53:36,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:53:36,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:36" (1/1) ... [2021-11-12 23:53:36,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545b26cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:36, skipping insertion in model container [2021-11-12 23:53:36,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:36" (1/1) ... [2021-11-12 23:53:36,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:53:36,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:40,494 WARN L228 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/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] [2021-11-12 23:53:40,498 WARN L228 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/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] [2021-11-12 23:53:40,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:40,553 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:53:40,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:41,204 WARN L228 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/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] [2021-11-12 23:53:41,205 WARN L228 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/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] [2021-11-12 23:53:41,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:41,239 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:53:41,850 WARN L228 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/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] [2021-11-12 23:53:41,850 WARN L228 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_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/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] [2021-11-12 23:53:41,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:42,075 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:53:42,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42 WrapperNode [2021-11-12 23:53:42,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:42,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:53:42,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:53:42,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:53:42,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:53:42,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:53:42,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:53:42,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:53:42,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:53:42,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:53:42,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:53:42,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:53:42,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:42,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:42,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:53:43,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:53:43,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:53:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_ds_info [2021-11-12 23:53:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_ds_info [2021-11-12 23:53:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-12 23:53:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_prepare [2021-11-12 23:53:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_prepare [2021-11-12 23:53:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_prepare_ds [2021-11-12 23:53:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_prepare_ds [2021-11-12 23:53:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_write [2021-11-12 23:53:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_write [2021-11-12 23:53:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:53:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:53:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-12 23:53:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-12 23:53:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:53:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:53:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-12 23:53:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-12 23:53:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_init_commit [2021-11-12 23:53:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_init_commit [2021-11-12 23:53:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_init_decode_pages [2021-11-12 23:53:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_init_decode_pages [2021-11-12 23:53:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 23:53:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 23:53:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_lseg [2021-11-12 23:53:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_lseg [2021-11-12 23:53:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2021-11-12 23:53:43,053 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2021-11-12 23:53:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_select_ds_fh [2021-11-12 23:53:43,053 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_select_ds_fh [2021-11-12 23:53:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-12 23:53:43,053 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-12 23:53:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_LSEG [2021-11-12 23:53:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_LSEG [2021-11-12 23:53:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:53:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:53:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_read [2021-11-12 23:53:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_read [2021-11-12 23:53:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-12 23:53:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:53:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:53:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_j_index [2021-11-12 23:53:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_j_index [2021-11-12 23:53:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:53:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_104 [2021-11-12 23:53:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_104 [2021-11-12 23:53:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:53:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_count_stats [2021-11-12 23:53:43,058 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_count_stats [2021-11-12 23:53:43,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:53:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:53:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_104___0 [2021-11-12 23:53:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_104___0 [2021-11-12 23:53:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-12 23:53:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-12 23:53:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_get_lseg [2021-11-12 23:53:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_get_lseg [2021-11-12 23:53:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-12 23:53:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-12 23:53:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_pageio_reset_read_mds [2021-11-12 23:53:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_pageio_reset_read_mds [2021-11-12 23:53:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_recover_commit_reqs [2021-11-12 23:53:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_recover_commit_reqs [2021-11-12 23:53:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:53:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:53:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_test [2021-11-12 23:53:43,063 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_test [2021-11-12 23:53:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_write [2021-11-12 23:53:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_write [2021-11-12 23:53:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_commit_list [2021-11-12 23:53:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_commit_list [2021-11-12 23:53:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-12 23:53:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-12 23:53:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-12 23:53:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-12 23:53:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_layout_hdr [2021-11-12 23:53:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_layout_hdr [2021-11-12 23:53:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:53:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:53:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_find_or_create_ds_client [2021-11-12 23:53:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_find_or_create_ds_client [2021-11-12 23:53:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-12 23:53:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-12 23:53:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-12 23:53:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-12 23:53:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-12 23:53:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-12 23:53:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_deveiceid_node [2021-11-12 23:53:43,068 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_deveiceid_node [2021-11-12 23:53:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:53:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:53:43,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:53:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:53:43,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:53:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_request_remove_commit_list [2021-11-12 23:53:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_request_remove_commit_list [2021-11-12 23:53:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-12 23:53:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2021-11-12 23:53:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-12 23:53:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-12 23:53:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-12 23:53:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-12 23:53:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_FROM_HDR [2021-11-12 23:53:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_FROM_HDR [2021-11-12 23:53:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2021-11-12 23:53:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2021-11-12 23:53:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:53:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:53:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:53:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_layout_hdr [2021-11-12 23:53:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_layout_hdr [2021-11-12 23:53:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:53:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:53:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure req_offset [2021-11-12 23:53:43,077 INFO L138 BoogieDeclarations]: Found implementation of procedure req_offset [2021-11-12 23:53:43,077 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:53:43,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:53:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:53:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_mark_request_commit [2021-11-12 23:53:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_mark_request_commit [2021-11-12 23:53:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:53:43,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-12 23:53:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-12 23:53:43,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-12 23:53:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-12 23:53:43,087 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-12 23:53:43,087 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:53:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:53:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure _filelayout_free_lseg [2021-11-12 23:53:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure _filelayout_free_lseg [2021-11-12 23:53:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_lseg [2021-11-12 23:53:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_lseg [2021-11-12 23:53:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:53:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:53:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:53:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_set_rw_stateid [2021-11-12 23:53:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_set_rw_stateid [2021-11-12 23:53:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:53:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:53:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-12 23:53:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-12 23:53:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:53:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:53:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:53:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:53:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:53:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:53:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:53:43,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:53:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_count_stats [2021-11-12 23:53:43,091 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_count_stats [2021-11-12 23:53:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_DEVID_NODE [2021-11-12 23:53:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_DEVID_NODE [2021-11-12 23:53:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_resend_writes [2021-11-12 23:53:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_resend_writes [2021-11-12 23:53:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_sequence_done [2021-11-12 23:53:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_sequence_done [2021-11-12 23:53:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_free_deviceid [2021-11-12 23:53:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_free_deviceid [2021-11-12 23:53:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_retry_commit [2021-11-12 23:53:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_retry_commit [2021-11-12 23:53:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_scan_commit_lists [2021-11-12 23:53:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_scan_commit_lists [2021-11-12 23:53:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_fenceme [2021-11-12 23:53:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_fenceme [2021-11-12 23:53:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_pagelist [2021-11-12 23:53:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_pagelist [2021-11-12 23:53:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_put_lseg [2021-11-12 23:53:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_put_lseg [2021-11-12 23:53:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-12 23:53:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-12 23:53:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2021-11-12 23:53:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2021-11-12 23:53:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_count_stats [2021-11-12 23:53:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_count_stats [2021-11-12 23:53:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_read [2021-11-12 23:53:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_read [2021-11-12 23:53:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_exit [2021-11-12 23:53:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_exit [2021-11-12 23:53:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 23:53:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 23:53:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-12 23:53:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-12 23:53:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_count_iostats [2021-11-12 23:53:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_count_iostats [2021-11-12 23:53:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_clear_request_commit [2021-11-12 23:53:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_clear_request_commit [2021-11-12 23:53:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:53:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-12 23:53:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-12 23:53:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_FILEID [2021-11-12 23:53:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_FILEID [2021-11-12 23:53:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_ds_index [2021-11-12 23:53:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_ds_index [2021-11-12 23:53:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_dserver_offset [2021-11-12 23:53:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_dserver_offset [2021-11-12 23:53:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:53:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_put_deviceid [2021-11-12 23:53:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_put_deviceid [2021-11-12 23:53:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-12 23:53:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-12 23:53:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:53:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:53:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:53:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:53:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:53:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_prepare [2021-11-12 23:53:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_prepare [2021-11-12 23:53:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2021-11-12 23:53:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2021-11-12 23:53:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 23:53:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 23:53:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-12 23:53:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-12 23:53:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_put_client [2021-11-12 23:53:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_put_client [2021-11-12 23:53:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:53:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:53:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-12 23:53:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-12 23:53:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 23:53:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 23:53:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-12 23:53:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-12 23:53:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_setup_sequence [2021-11-12 23:53:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_setup_sequence [2021-11-12 23:53:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-12 23:53:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-12 23:53:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_commitdata_alloc [2021-11-12 23:53:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_commitdata_alloc [2021-11-12 23:53:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_set_scratch_buffer [2021-11-12 23:53:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_set_scratch_buffer [2021-11-12 23:53:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_pagelist [2021-11-12 23:53:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_pagelist [2021-11-12 23:53:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:53:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:53:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:53:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:53:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-12 23:53:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-12 23:53:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_fh_array [2021-11-12 23:53:43,111 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_fh_array [2021-11-12 23:53:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:53:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:53:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:53:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:53:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_pagelist [2021-11-12 23:53:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_pagelist [2021-11-12 23:53:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:53:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:53:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_initiate_commit [2021-11-12 23:53:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_initiate_commit [2021-11-12 23:53:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-12 23:53:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 23:53:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 23:53:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_103 [2021-11-12 23:53:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_103 [2021-11-12 23:53:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-12 23:53:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-12 23:53:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_print_deviceid [2021-11-12 23:53:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_print_deviceid [2021-11-12 23:53:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:53:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:53:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_update_layout [2021-11-12 23:53:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_update_layout [2021-11-12 23:53:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-12 23:53:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-12 23:53:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-12 23:53:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-12 23:53:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-12 23:53:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-12 23:53:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_mark_deviceid_unavailable [2021-11-12 23:53:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_mark_deviceid_unavailable [2021-11-12 23:53:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_test_devid_unavailable [2021-11-12 23:53:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_test_devid_unavailable [2021-11-12 23:53:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-12 23:53:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-12 23:53:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_prepare [2021-11-12 23:53:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_prepare [2021-11-12 23:53:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:53:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:53:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_to_mds [2021-11-12 23:53:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_to_mds [2021-11-12 23:53:45,792 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:54:16,325 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:54:16,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:54:16,565 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:54:16,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:16 BoogieIcfgContainer [2021-11-12 23:54:16,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:54:16,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:54:16,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:54:16,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:54:16,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:53:36" (1/3) ... [2021-11-12 23:54:16,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a541a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:54:16, skipping insertion in model container [2021-11-12 23:54:16,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:42" (2/3) ... [2021-11-12 23:54:16,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a541a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:54:16, skipping insertion in model container [2021-11-12 23:54:16,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:16" (3/3) ... [2021-11-12 23:54:16,594 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-12 23:54:16,608 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:54:16,609 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:54:16,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:54:16,679 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 [2021-11-12 23:54:16,680 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:54:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 2168 states, 1441 states have (on average 1.2914642609299098) internal successors, (1861), 1489 states have internal predecessors, (1861), 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) [2021-11-12 23:54:16,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-12 23:54:16,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:16,797 INFO L514 BasicCegarLoop]: trace histogram [35, 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, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:16,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:16,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash -284622610, now seen corresponding path program 1 times [2021-11-12 23:54:16,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:16,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867171723] [2021-11-12 23:54:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:16,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:16,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:16,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:16,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:54:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:23,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2202 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:54:23,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-12 23:54:24,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-12 23:54:25,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:25,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867171723] [2021-11-12 23:54:25,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867171723] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:25,873 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:25,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:54:25,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074917335] [2021-11-12 23:54:25,877 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:25,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:25,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:25,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:25,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:25,930 INFO L87 Difference]: Start difference. First operand has 2168 states, 1441 states have (on average 1.2914642609299098) internal successors, (1861), 1489 states have internal predecessors, (1861), 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 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 23:54:28,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:54:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:37,500 INFO L93 Difference]: Finished difference Result 8247 states and 11766 transitions. [2021-11-12 23:54:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:37,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 408 [2021-11-12 23:54:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:37,569 INFO L225 Difference]: With dead ends: 8247 [2021-11-12 23:54:37,569 INFO L226 Difference]: Without dead ends: 6040 [2021-11-12 23:54:37,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:37,595 INFO L933 BasicCegarLoop]: 4109 mSDtfsCounter, 7491 mSDsluCounter, 4580 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 1123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9817.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7491 SdHoareTripleChecker+Valid, 8689 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.93ms SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10957.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:37,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7491 Valid, 8689 Invalid, 2426 Unknown, 0 Unchecked, 72.93ms Time], IncrementalHoareTripleChecker [1123 Valid, 1302 Invalid, 1 Unknown, 0 Unchecked, 10957.52ms Time] [2021-11-12 23:54:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2021-11-12 23:54:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6032. [2021-11-12 23:54:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6032 states, 4054 states have (on average 1.2903305377405032) internal successors, (5231), 4199 states have internal predecessors, (5231), 1611 states have call successors, (1611), 366 states have call predecessors, (1611), 366 states have return successors, (1611), 1538 states have call predecessors, (1611), 1611 states have call successors, (1611) [2021-11-12 23:54:38,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6032 states to 6032 states and 8453 transitions. [2021-11-12 23:54:38,254 INFO L78 Accepts]: Start accepts. Automaton has 6032 states and 8453 transitions. Word has length 408 [2021-11-12 23:54:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:38,260 INFO L470 AbstractCegarLoop]: Abstraction has 6032 states and 8453 transitions. [2021-11-12 23:54:38,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 23:54:38,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6032 states and 8453 transitions. [2021-11-12 23:54:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-12 23:54:38,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:38,276 INFO L514 BasicCegarLoop]: trace histogram [35, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:38,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:38,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:38,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:38,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:38,497 INFO L85 PathProgramCache]: Analyzing trace with hash 298122606, now seen corresponding path program 1 times [2021-11-12 23:54:38,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:38,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612148213] [2021-11-12 23:54:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:38,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:38,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:38,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:38,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:54:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:45,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:54:45,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-12 23:54:46,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-12 23:54:47,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:47,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612148213] [2021-11-12 23:54:47,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612148213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:47,355 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:47,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:54:47,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506870528] [2021-11-12 23:54:47,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:47,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:47,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:47,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:47,359 INFO L87 Difference]: Start difference. First operand 6032 states and 8453 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 23:54:49,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:54:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:58,169 INFO L93 Difference]: Finished difference Result 19611 states and 27265 transitions. [2021-11-12 23:54:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 409 [2021-11-12 23:54:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:58,288 INFO L225 Difference]: With dead ends: 19611 [2021-11-12 23:54:58,288 INFO L226 Difference]: Without dead ends: 13652 [2021-11-12 23:54:58,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:58,325 INFO L933 BasicCegarLoop]: 5288 mSDtfsCounter, 6336 mSDsluCounter, 4501 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 786 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9203.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 9789 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.51ms SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10124.02ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:58,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6336 Valid, 9789 Invalid, 2037 Unknown, 0 Unchecked, 50.51ms Time], IncrementalHoareTripleChecker [786 Valid, 1250 Invalid, 1 Unknown, 0 Unchecked, 10124.02ms Time] [2021-11-12 23:54:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13652 states. [2021-11-12 23:54:59,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13652 to 13640. [2021-11-12 23:54:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13640 states, 9082 states have (on average 1.283527857300154) internal successors, (11657), 9453 states have internal predecessors, (11657), 3617 states have call successors, (3617), 940 states have call predecessors, (3617), 940 states have return successors, (3617), 3398 states have call predecessors, (3617), 3617 states have call successors, (3617) [2021-11-12 23:54:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13640 states to 13640 states and 18891 transitions. [2021-11-12 23:54:59,335 INFO L78 Accepts]: Start accepts. Automaton has 13640 states and 18891 transitions. Word has length 409 [2021-11-12 23:54:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:59,337 INFO L470 AbstractCegarLoop]: Abstraction has 13640 states and 18891 transitions. [2021-11-12 23:54:59,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 23:54:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 13640 states and 18891 transitions. [2021-11-12 23:54:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-11-12 23:54:59,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:59,356 INFO L514 BasicCegarLoop]: trace histogram [36, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:59,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:59,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:59,580 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1977671146, now seen corresponding path program 1 times [2021-11-12 23:54:59,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:59,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332346218] [2021-11-12 23:54:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:59,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:59,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:59,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:59,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:55:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:06,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:55:06,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5259 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-12 23:55:07,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5259 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2021-11-12 23:55:08,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:08,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332346218] [2021-11-12 23:55:08,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332346218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:08,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:08,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:55:08,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294039000] [2021-11-12 23:55:08,079 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:08,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:55:08,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:55:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:55:08,081 INFO L87 Difference]: Start difference. First operand 13640 states and 18891 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2021-11-12 23:55:10,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:16,770 INFO L93 Difference]: Finished difference Result 41382 states and 57245 transitions. [2021-11-12 23:55:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:55:16,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) Word has length 442 [2021-11-12 23:55:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:16,950 INFO L225 Difference]: With dead ends: 41382 [2021-11-12 23:55:16,951 INFO L226 Difference]: Without dead ends: 27815 [2021-11-12 23:55:17,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:55:17,010 INFO L933 BasicCegarLoop]: 3743 mSDtfsCounter, 4018 mSDsluCounter, 5332 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7111.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4018 SdHoareTripleChecker+Valid, 9075 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.02ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7707.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:17,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4018 Valid, 9075 Invalid, 1132 Unknown, 0 Unchecked, 30.02ms Time], IncrementalHoareTripleChecker [18 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 7707.57ms Time] [2021-11-12 23:55:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27815 states. [2021-11-12 23:55:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27815 to 27811. [2021-11-12 23:55:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27811 states, 18494 states have (on average 1.2839839948091274) internal successors, (23746), 19250 states have internal predecessors, (23746), 7349 states have call successors, (7349), 1967 states have call predecessors, (7349), 1967 states have return successors, (7349), 6905 states have call predecessors, (7349), 7349 states have call successors, (7349) [2021-11-12 23:55:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27811 states to 27811 states and 38444 transitions. [2021-11-12 23:55:18,914 INFO L78 Accepts]: Start accepts. Automaton has 27811 states and 38444 transitions. Word has length 442 [2021-11-12 23:55:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:18,915 INFO L470 AbstractCegarLoop]: Abstraction has 27811 states and 38444 transitions. [2021-11-12 23:55:18,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2021-11-12 23:55:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 27811 states and 38444 transitions. [2021-11-12 23:55:18,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-12 23:55:18,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:18,933 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:18,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:19,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:19,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1504146588, now seen corresponding path program 1 times [2021-11-12 23:55:19,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:19,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399219041] [2021-11-12 23:55:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:19,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:19,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:19,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:19,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:55:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:25,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 2404 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:55:25,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5463 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 5052 trivial. 0 not checked. [2021-11-12 23:55:26,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5463 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2021-11-12 23:55:27,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:27,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399219041] [2021-11-12 23:55:27,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399219041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:27,779 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:27,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:55:27,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000593537] [2021-11-12 23:55:27,780 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:27,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:55:27,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:55:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:55:27,781 INFO L87 Difference]: Start difference. First operand 27811 states and 38444 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2021-11-12 23:55:30,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:55:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:55:37,522 INFO L93 Difference]: Finished difference Result 107761 states and 148743 transitions. [2021-11-12 23:55:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:55:37,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) Word has length 453 [2021-11-12 23:55:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:55:38,081 INFO L225 Difference]: With dead ends: 107761 [2021-11-12 23:55:38,081 INFO L226 Difference]: Without dead ends: 80023 [2021-11-12 23:55:38,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:55:38,195 INFO L933 BasicCegarLoop]: 4026 mSDtfsCounter, 5738 mSDsluCounter, 5129 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6751.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5738 SdHoareTripleChecker+Valid, 9155 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.60ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7312.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:55:38,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5738 Valid, 9155 Invalid, 1215 Unknown, 0 Unchecked, 25.60ms Time], IncrementalHoareTripleChecker [24 Valid, 1190 Invalid, 1 Unknown, 0 Unchecked, 7312.74ms Time] [2021-11-12 23:55:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80023 states. [2021-11-12 23:55:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80023 to 79911. [2021-11-12 23:55:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79911 states, 53238 states have (on average 1.2834629400052595) internal successors, (68329), 55482 states have internal predecessors, (68329), 20927 states have call successors, (20927), 5745 states have call predecessors, (20927), 5745 states have return successors, (20927), 19603 states have call predecessors, (20927), 20927 states have call successors, (20927) [2021-11-12 23:55:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79911 states to 79911 states and 110183 transitions. [2021-11-12 23:55:43,100 INFO L78 Accepts]: Start accepts. Automaton has 79911 states and 110183 transitions. Word has length 453 [2021-11-12 23:55:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:55:43,103 INFO L470 AbstractCegarLoop]: Abstraction has 79911 states and 110183 transitions. [2021-11-12 23:55:43,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2021-11-12 23:55:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 79911 states and 110183 transitions. [2021-11-12 23:55:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-11-12 23:55:43,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:55:43,119 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:55:43,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:55:43,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:55:43,333 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:55:43,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:55:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1515774131, now seen corresponding path program 1 times [2021-11-12 23:55:43,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:55:43,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656347168] [2021-11-12 23:55:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:55:43,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:55:43,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:55:43,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:55:43,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:55:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:55:50,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:55:50,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5463 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 5052 trivial. 0 not checked. [2021-11-12 23:55:51,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5463 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5463 trivial. 0 not checked. [2021-11-12 23:55:52,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:55:52,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656347168] [2021-11-12 23:55:52,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656347168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:55:52,415 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:55:52,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:55:52,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385938534] [2021-11-12 23:55:52,416 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:55:52,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:55:52,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:55:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:55:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:55:52,418 INFO L87 Difference]: Start difference. First operand 79911 states and 110183 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) [2021-11-12 23:55:54,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:56:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:56:07,101 INFO L93 Difference]: Finished difference Result 313393 states and 431329 transitions. [2021-11-12 23:56:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:56:07,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) Word has length 459 [2021-11-12 23:56:07,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:56:08,424 INFO L225 Difference]: With dead ends: 313393 [2021-11-12 23:56:08,424 INFO L226 Difference]: Without dead ends: 233555 [2021-11-12 23:56:08,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:56:08,713 INFO L933 BasicCegarLoop]: 4073 mSDtfsCounter, 5738 mSDsluCounter, 5127 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6691.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5738 SdHoareTripleChecker+Valid, 9200 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.76ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7265.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:56:08,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5738 Valid, 9200 Invalid, 1215 Unknown, 0 Unchecked, 24.76ms Time], IncrementalHoareTripleChecker [24 Valid, 1190 Invalid, 1 Unknown, 0 Unchecked, 7265.31ms Time] [2021-11-12 23:56:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233555 states. [2021-11-12 23:56:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233555 to 233479. [2021-11-12 23:56:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233479 states, 155858 states have (on average 1.2817308062467117) internal successors, (199768), 162566 states have internal predecessors, (199768), 60541 states have call successors, (60541), 17079 states have call predecessors, (60541), 17079 states have return successors, (60541), 56577 states have call predecessors, (60541), 60541 states have call successors, (60541) [2021-11-12 23:56:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233479 states to 233479 states and 320850 transitions. [2021-11-12 23:56:21,501 INFO L78 Accepts]: Start accepts. Automaton has 233479 states and 320850 transitions. Word has length 459 [2021-11-12 23:56:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:56:21,502 INFO L470 AbstractCegarLoop]: Abstraction has 233479 states and 320850 transitions. [2021-11-12 23:56:21,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (52), 4 states have call predecessors, (52), 4 states have call successors, (52) [2021-11-12 23:56:21,503 INFO L276 IsEmpty]: Start isEmpty. Operand 233479 states and 320850 transitions. [2021-11-12 23:56:21,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-12 23:56:21,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:56:21,513 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:56:21,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:56:21,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:56:21,735 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:56:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:56:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1560998385, now seen corresponding path program 1 times [2021-11-12 23:56:21,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:56:21,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918424174] [2021-11-12 23:56:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:21,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:56:21,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:56:21,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:56:21,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a98df71d-224a-4c6c-9cbf-1bdaa77fca49/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process