./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs --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 32bit --witnessprinter.graph.data.programhash 997512b29ff7fdf1190aebf9d039045a1841d533 .............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs --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 32bit --witnessprinter.graph.data.programhash 997512b29ff7fdf1190aebf9d039045a1841d533 .............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:21:14,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:21:14,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:21:14,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:21:14,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:21:14,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:21:14,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:21:14,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:21:14,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:21:14,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:21:14,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:21:14,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:21:14,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:21:14,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:21:14,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:21:14,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:21:14,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:21:14,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:21:14,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:21:14,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:21:14,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:21:14,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:21:14,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:21:14,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:21:14,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:21:14,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:21:14,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:21:14,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:21:14,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:21:14,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:21:14,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:21:14,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:21:14,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:21:14,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:21:14,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:21:14,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:21:14,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:21:14,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:21:14,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:21:14,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:21:14,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:21:14,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:21:14,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:21:14,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:21:14,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:21:14,684 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:21:14,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:21:14,684 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:21:14,684 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:21:14,685 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:21:14,691 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:21:14,691 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:21:14,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:21:14,692 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:21:14,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:21:14,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:21:14,693 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:21:14,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:21:14,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:21:14,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:21:14,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:21:14,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:21:14,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:21:14,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:21:14,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:21:14,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:21:14,696 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:21:14,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:21:14,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:21:14,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:21:14,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:21:14,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:21:14,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:21:14,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:21:14,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:21:14,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:21:14,699 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:21:14,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:21:14,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:21:14,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:21:14,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:21:14,700 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_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 997512b29ff7fdf1190aebf9d039045a1841d533 [2021-10-16 03:21:15,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:21:15,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:21:15,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:21:15,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:21:15,097 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:21:15,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2021-10-16 03:21:15,166 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data/bd808f59d/94ff6893f3b0432894d04473ef6236cf/FLAGd7f61ce7d [2021-10-16 03:21:15,710 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:21:15,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2021-10-16 03:21:15,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data/bd808f59d/94ff6893f3b0432894d04473ef6236cf/FLAGd7f61ce7d [2021-10-16 03:21:16,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data/bd808f59d/94ff6893f3b0432894d04473ef6236cf [2021-10-16 03:21:16,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:21:16,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:21:16,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:21:16,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:21:16,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:21:16,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353dc516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16, skipping insertion in model container [2021-10-16 03:21:16,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:21:16,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:21:16,495 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_2594dac6-663a-4c7a-aa3d-5f46119b3408/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2021-10-16 03:21:16,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:21:16,521 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:21:16,583 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_2594dac6-663a-4c7a-aa3d-5f46119b3408/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2021-10-16 03:21:16,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:21:16,616 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:21:16,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16 WrapperNode [2021-10-16 03:21:16,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:21:16,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:21:16,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:21:16,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:21:16,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:21:16,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:21:16,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:21:16,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:21:16,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:21:16,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:21:16,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:21:16,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:21:16,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (1/1) ... [2021-10-16 03:21:16,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:21:16,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:21:16,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:21:16,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:21:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:21:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:21:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:21:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:21:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:21:17,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:21:17,841 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-16 03:21:17,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:17 BoogieIcfgContainer [2021-10-16 03:21:17,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:21:17,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:21:17,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:21:17,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:21:17,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:21:16" (1/3) ... [2021-10-16 03:21:17,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4348fb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:21:17, skipping insertion in model container [2021-10-16 03:21:17,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:16" (2/3) ... [2021-10-16 03:21:17,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4348fb71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:21:17, skipping insertion in model container [2021-10-16 03:21:17,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:17" (3/3) ... [2021-10-16 03:21:17,861 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-1.i [2021-10-16 03:21:17,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:21:17,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:21:17,928 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:21:17,934 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, mConcurrency=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 [2021-10-16 03:21:17,935 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:21:17,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 03:21:17,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:17,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:17,958 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:17,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1310243095, now seen corresponding path program 1 times [2021-10-16 03:21:17,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:21:17,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025104924] [2021-10-16 03:21:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:17,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:21:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:18,149 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:21:18,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025104924] [2021-10-16 03:21:18,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025104924] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:18,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:18,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:21:18,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109414552] [2021-10-16 03:21:18,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:21:18,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:21:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:21:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:21:18,190 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:18,210 INFO L93 Difference]: Finished difference Result 45 states and 67 transitions. [2021-10-16 03:21:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:21:18,212 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 03:21:18,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:18,223 INFO L225 Difference]: With dead ends: 45 [2021-10-16 03:21:18,223 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 03:21:18,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:21:18,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 03:21:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 03:21:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-16 03:21:18,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2021-10-16 03:21:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:18,262 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-16 03:21:18,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-16 03:21:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:21:18,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:18,263 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:18,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:21:18,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:18,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:18,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1889499438, now seen corresponding path program 1 times [2021-10-16 03:21:18,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:21:18,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142834908] [2021-10-16 03:21:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:18,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:21:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:18,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:21:18,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142834908] [2021-10-16 03:21:18,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142834908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:18,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:18,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 03:21:18,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426570065] [2021-10-16 03:21:18,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:21:18,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:21:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:21:18,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:21:18,437 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:18,543 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-16 03:21:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:21:18,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 03:21:18,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:18,545 INFO L225 Difference]: With dead ends: 25 [2021-10-16 03:21:18,546 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 03:21:18,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:21:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 03:21:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2021-10-16 03:21:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-16 03:21:18,559 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2021-10-16 03:21:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:18,560 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-16 03:21:18,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:18,561 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-16 03:21:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:21:18,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:18,568 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:18,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:21:18,571 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:18,572 INFO L82 PathProgramCache]: Analyzing trace with hash 241183453, now seen corresponding path program 1 times [2021-10-16 03:21:18,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:21:18,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323432634] [2021-10-16 03:21:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:18,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:21:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:18,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:21:18,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323432634] [2021-10-16 03:21:18,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323432634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:21:18,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252408792] [2021-10-16 03:21:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:18,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:21:18,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:21:18,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:21:18,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:21:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:18,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 03:21:18,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:19,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:21:19,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:21:19,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-16 03:21:19,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-16 03:21:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:19,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:19,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-10-16 03:21:19,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:19,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:19,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252408792] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:21:19,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [397043264] [2021-10-16 03:21:19,332 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 03:21:19,332 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:21:19,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:21:19,352 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:21:19,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:21:19,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:19,402 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:21:19,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:19,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 03:21:19,405 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:21:19,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:19,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 03:21:19,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-16 03:21:19,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:19,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:19,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:19,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 03:21:19,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:19,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:21:19,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:19,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 03:21:19,443 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:21:19,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:19,476 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:19,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:21:19,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-10-16 03:21:19,482 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:21:19,482 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:119 [2021-10-16 03:21:19,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:19,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:21:19,708 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_49| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:21:19,713 INFO L168 Benchmark]: Toolchain (without parser) took 3698.66 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 82.1 MB in the beginning and 80.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:19,713 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 113.2 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:19,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.13 ms. Allocated memory is still 113.2 MB. Free memory was 82.1 MB in the beginning and 80.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:19,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.99 ms. Allocated memory is still 113.2 MB. Free memory was 80.9 MB in the beginning and 78.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:19,715 INFO L168 Benchmark]: Boogie Preprocessor took 43.58 ms. Allocated memory is still 113.2 MB. Free memory was 78.5 MB in the beginning and 76.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:19,716 INFO L168 Benchmark]: RCFGBuilder took 1124.74 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 76.4 MB in the beginning and 106.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:19,716 INFO L168 Benchmark]: TraceAbstraction took 1860.08 ms. Allocated memory is still 140.5 MB. Free memory was 106.5 MB in the beginning and 80.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:19,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 113.2 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 62.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 603.13 ms. Allocated memory is still 113.2 MB. Free memory was 82.1 MB in the beginning and 80.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.99 ms. Allocated memory is still 113.2 MB. Free memory was 80.9 MB in the beginning and 78.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.58 ms. Allocated memory is still 113.2 MB. Free memory was 78.5 MB in the beginning and 76.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1124.74 ms. Allocated memory was 113.2 MB in the beginning and 140.5 MB in the end (delta: 27.3 MB). Free memory was 76.4 MB in the beginning and 106.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1860.08 ms. Allocated memory is still 140.5 MB. Free memory was 106.5 MB in the beginning and 80.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_49| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_49|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:21:19,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:21:22,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:21:22,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:21:22,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:21:22,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:21:22,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:21:22,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:21:22,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:21:22,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:21:22,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:21:22,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:21:22,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:21:22,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:21:22,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:21:22,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:21:22,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:21:22,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:21:22,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:21:22,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:21:22,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:21:22,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:21:22,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:21:22,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:21:22,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:21:22,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:21:22,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:21:22,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:21:22,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:21:22,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:21:22,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:21:22,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:21:22,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:21:22,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:21:22,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:21:22,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:21:22,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:21:22,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:21:22,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:21:22,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:21:22,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:21:22,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:21:22,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:21:22,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:21:22,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:21:22,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:21:22,555 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:21:22,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:21:22,556 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:21:22,556 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:21:22,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:21:22,556 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:21:22,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:21:22,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:21:22,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:21:22,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:21:22,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:21:22,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:21:22,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:21:22,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:21:22,559 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:21:22,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:21:22,560 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:21:22,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:21:22,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:21:22,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:21:22,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:21:22,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:21:22,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:21:22,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:21:22,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:21:22,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:21:22,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:21:22,563 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:21:22,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:21:22,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:21:22,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:21:22,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:21:22,564 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_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 997512b29ff7fdf1190aebf9d039045a1841d533 [2021-10-16 03:21:22,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:21:22,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:21:22,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:21:22,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:21:22,960 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:21:22,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2021-10-16 03:21:23,046 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data/9dcf3ffb7/d60b6f3304e64690a1a82ae7588040f7/FLAGb1c2c4271 [2021-10-16 03:21:23,828 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:21:23,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2021-10-16 03:21:23,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data/9dcf3ffb7/d60b6f3304e64690a1a82ae7588040f7/FLAGb1c2c4271 [2021-10-16 03:21:24,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/data/9dcf3ffb7/d60b6f3304e64690a1a82ae7588040f7 [2021-10-16 03:21:24,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:21:24,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:21:24,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:21:24,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:21:24,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:21:24,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35429e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24, skipping insertion in model container [2021-10-16 03:21:24,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:21:24,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:21:24,597 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_2594dac6-663a-4c7a-aa3d-5f46119b3408/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2021-10-16 03:21:24,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:21:24,616 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:21:24,664 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_2594dac6-663a-4c7a-aa3d-5f46119b3408/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2021-10-16 03:21:24,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:21:24,705 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:21:24,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24 WrapperNode [2021-10-16 03:21:24,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:21:24,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:21:24,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:21:24,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:21:24,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:21:24,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:21:24,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:21:24,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:21:24,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:21:24,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:21:24,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:21:24,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:21:24,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (1/1) ... [2021-10-16 03:21:24,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:21:24,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:21:24,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:21:24,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:21:24,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:21:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 03:21:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 03:21:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:21:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 03:21:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:21:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:21:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:21:24,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:21:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:21:25,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:21:25,806 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-16 03:21:25,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:25 BoogieIcfgContainer [2021-10-16 03:21:25,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:21:25,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:21:25,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:21:25,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:21:25,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:21:24" (1/3) ... [2021-10-16 03:21:25,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ee0efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:21:25, skipping insertion in model container [2021-10-16 03:21:25,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:24" (2/3) ... [2021-10-16 03:21:25,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ee0efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:21:25, skipping insertion in model container [2021-10-16 03:21:25,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:25" (3/3) ... [2021-10-16 03:21:25,822 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-1.i [2021-10-16 03:21:25,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:21:25,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:21:25,903 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:21:25,916 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, mConcurrency=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 [2021-10-16 03:21:25,916 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:21:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:21:25,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:25,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:25,963 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:25,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2102156727, now seen corresponding path program 1 times [2021-10-16 03:21:25,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:25,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672359575] [2021-10-16 03:21:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:25,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:25,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:25,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:26,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:21:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:26,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:21:26,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:26,356 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-16 03:21:26,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 7 [2021-10-16 03:21:26,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-16 03:21:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:26,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:26,468 INFO L354 Elim1Store]: treesize reduction 28, result has 22.2 percent of original size [2021-10-16 03:21:26,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2021-10-16 03:21:26,493 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-16 03:21:26,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2021-10-16 03:21:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:26,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:26,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672359575] [2021-10-16 03:21:26,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672359575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:26,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:26,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-16 03:21:26,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12011849] [2021-10-16 03:21:26,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:21:26,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:26,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:21:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:21:26,559 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:27,283 INFO L93 Difference]: Finished difference Result 89 states and 132 transitions. [2021-10-16 03:21:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:21:27,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 03:21:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:27,295 INFO L225 Difference]: With dead ends: 89 [2021-10-16 03:21:27,296 INFO L226 Difference]: Without dead ends: 25 [2021-10-16 03:21:27,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:21:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-16 03:21:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2021-10-16 03:21:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-16 03:21:27,330 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2021-10-16 03:21:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:27,331 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-16 03:21:27,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-16 03:21:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 03:21:27,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:27,332 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:27,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:27,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:27,545 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:27,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:27,550 INFO L82 PathProgramCache]: Analyzing trace with hash 437717459, now seen corresponding path program 1 times [2021-10-16 03:21:27,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:27,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762047117] [2021-10-16 03:21:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:27,553 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:27,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:27,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:27,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:21:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:27,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:21:27,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:27,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 03:21:27,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-16 03:21:27,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-16 03:21:27,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-16 03:21:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:27,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:28,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-10-16 03:21:28,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:28,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:28,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762047117] [2021-10-16 03:21:28,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762047117] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:21:28,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2017319338] [2021-10-16 03:21:28,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:28,056 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:21:28,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:21:28,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:21:28,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-16 03:21:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:28,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:21:28,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:28,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:21:28,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:21:28,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-16 03:21:28,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-16 03:21:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:28,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:28,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-10-16 03:21:28,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:28,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:28,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2017319338] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:21:28,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072548681] [2021-10-16 03:21:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:28,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:21:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:21:28,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:21:28,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 03:21:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:28,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:21:28,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:28,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:21:28,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-16 03:21:28,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-16 03:21:28,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-16 03:21:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:28,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:28,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-10-16 03:21:28,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:28,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:21:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:28,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072548681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:21:28,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:21:28,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 5, 6, 5] total 8 [2021-10-16 03:21:28,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754586497] [2021-10-16 03:21:28,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:21:28,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:28,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:21:28,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:21:28,972 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:29,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:29,194 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-10-16 03:21:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:21:29,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 03:21:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:29,196 INFO L225 Difference]: With dead ends: 31 [2021-10-16 03:21:29,196 INFO L226 Difference]: Without dead ends: 21 [2021-10-16 03:21:29,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 174.4ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:21:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-16 03:21:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2021-10-16 03:21:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-16 03:21:29,201 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-10-16 03:21:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:29,201 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-16 03:21:29,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-16 03:21:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 03:21:29,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:29,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:29,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-16 03:21:29,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:29,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:29,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:21:29,817 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1803058100, now seen corresponding path program 1 times [2021-10-16 03:21:29,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:29,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322208524] [2021-10-16 03:21:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:29,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:29,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:29,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:29,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:21:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:21:29,982 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:21:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:21:30,061 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 03:21:30,062 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:21:30,063 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:21:30,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:30,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:30,270 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:21:30,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:21:30 BoogieIcfgContainer [2021-10-16 03:21:30,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:21:30,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:21:30,302 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:21:30,302 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:21:30,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:25" (3/4) ... [2021-10-16 03:21:30,305 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 03:21:30,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:21:30,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:21:30,350 INFO L168 Benchmark]: Toolchain (without parser) took 6262.41 ms. Allocated memory was 50.3 MB in the beginning and 83.9 MB in the end (delta: 33.6 MB). Free memory was 25.6 MB in the beginning and 61.1 MB in the end (delta: -35.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:30,351 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 31.4 MB in the beginning and 31.4 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:30,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.31 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 25.3 MB in the beginning and 41.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:30,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.83 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 39.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:30,353 INFO L168 Benchmark]: Boogie Preprocessor took 61.91 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 37.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:30,353 INFO L168 Benchmark]: RCFGBuilder took 964.87 ms. Allocated memory is still 67.1 MB. Free memory was 37.0 MB in the beginning and 47.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:30,354 INFO L168 Benchmark]: TraceAbstraction took 4487.42 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 46.6 MB in the beginning and 63.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:30,355 INFO L168 Benchmark]: Witness Printer took 47.46 ms. Allocated memory is still 83.9 MB. Free memory was 63.2 MB in the beginning and 61.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:30,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 50.3 MB. Free memory was 31.4 MB in the beginning and 31.4 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 615.31 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 25.3 MB in the beginning and 41.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.83 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 39.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.91 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 37.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 964.87 ms. Allocated memory is still 67.1 MB. Free memory was 37.0 MB in the beginning and 47.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4487.42 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 46.6 MB in the beginning and 63.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 47.46 ms. Allocated memory is still 83.9 MB. Free memory was 63.2 MB in the beginning and 61.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L596] List a = (List) malloc(sizeof(struct node)); [L597] COND FALSE !(a == 0) [L598] List t; [L599] List p = a; [L600] a->h = 2 [L601] COND TRUE __VERIFIER_nondet_int() [L602] p->h = 1 [L603] t = (List) malloc(sizeof(struct node)) [L604] COND FALSE !(t == 0) [L605] p->n = t [L606] EXPR p->n [L606] p = p->n [L601] COND FALSE !(__VERIFIER_nondet_int()) [L608] p->h = 2 [L609] p->n = 0 [L610] p = a [L611] COND TRUE p!=0 [L612] EXPR p->h [L612] COND TRUE p->h != 2 [L613] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4368.4ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 28.3ms, AutomataDifference: 984.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 54 SDslu, 119 SDs, 0 SdLazy, 77 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 710.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 241.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 73.8ms SsaConstructionTime, 179.7ms SatisfiabilityAnalysisTime, 1441.3ms InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 18 NumberOfNonLiveVariables, 183 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 03:21:30,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2594dac6-663a-4c7a-aa3d-5f46119b3408/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...