./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE --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 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 ......................................................................................................................................................................................................................................................................................................... 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-e943c26 [2021-10-24 10:34:54,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:34:54,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:34:54,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:34:54,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:34:54,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:34:54,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:34:54,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:34:54,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:34:54,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:34:54,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:34:54,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:34:54,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:34:54,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:34:54,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:34:54,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:34:54,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:34:54,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:34:54,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:34:54,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:34:54,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:34:54,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:34:54,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:34:54,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:34:54,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:34:54,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:34:54,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:34:54,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:34:54,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:34:54,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:34:54,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:34:54,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:34:54,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:34:54,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:34:54,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:34:54,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:34:54,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:34:54,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:34:54,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:34:54,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:34:54,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:34:54,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:34:54,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:34:54,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:34:54,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:34:54,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:34:54,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:34:54,759 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:34:54,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:34:54,759 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:34:54,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:34:54,760 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:34:54,760 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:34:54,760 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:34:54,760 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:34:54,761 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:34:54,761 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:34:54,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:34:54,762 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:34:54,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:34:54,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:34:54,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:34:54,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:34:54,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:34:54,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:34:54,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:34:54,763 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:34:54,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:34:54,763 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:34:54,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:34:54,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:34:54,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:34:54,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:34:54,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:34:54,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:34:54,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:34:54,765 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:34:54,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:34:54,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:34:54,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:34:54,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:34:54,766 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_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 [2021-10-24 10:34:55,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:34:55,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:34:55,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:34:55,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:34:55,130 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:34:55,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-10-24 10:34:55,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/data/7299c0f1d/ef7c811a4e354a89964ad2e83186fdbc/FLAGa0a5dab3f [2021-10-24 10:34:55,865 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:34:55,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-10-24 10:34:55,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/data/7299c0f1d/ef7c811a4e354a89964ad2e83186fdbc/FLAGa0a5dab3f [2021-10-24 10:34:56,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/data/7299c0f1d/ef7c811a4e354a89964ad2e83186fdbc [2021-10-24 10:34:56,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:34:56,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:34:56,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:34:56,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:34:56,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:34:56,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46d713f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56, skipping insertion in model container [2021-10-24 10:34:56,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:34:56,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:34:56,522 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_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-10-24 10:34:56,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:34:56,537 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:34:56,592 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_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-10-24 10:34:56,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:34:56,640 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:34:56,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56 WrapperNode [2021-10-24 10:34:56,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:34:56,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:34:56,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:34:56,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:34:56,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:34:56,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:34:56,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:34:56,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:34:56,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:34:56,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:34:56,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:34:56,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:34:56,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (1/1) ... [2021-10-24 10:34:56,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:34:56,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:34:56,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:34:56,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:34:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:34:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:34:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:34:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 10:34:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:34:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 10:34:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:34:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:34:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:34:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:34:57,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:34:57,456 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-24 10:34:57,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:57 BoogieIcfgContainer [2021-10-24 10:34:57,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:34:57,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:34:57,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:34:57,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:34:57,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:34:56" (1/3) ... [2021-10-24 10:34:57,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15099849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:34:57, skipping insertion in model container [2021-10-24 10:34:57,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:34:56" (2/3) ... [2021-10-24 10:34:57,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15099849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:34:57, skipping insertion in model container [2021-10-24 10:34:57,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:57" (3/3) ... [2021-10-24 10:34:57,471 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2021-10-24 10:34:57,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:34:57,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:34:57,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:34:57,586 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:34:57,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:34:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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) [2021-10-24 10:34:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:34:57,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:57,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:57,619 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:57,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:57,647 INFO L82 PathProgramCache]: Analyzing trace with hash -352024884, now seen corresponding path program 1 times [2021-10-24 10:34:57,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:34:57,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202502212] [2021-10-24 10:34:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:57,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:34:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:34:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:34:57,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:34:57,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202502212] [2021-10-24 10:34:57,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202502212] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:34:57,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:34:57,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:34:57,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20239724] [2021-10-24 10:34:57,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:34:57,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:34:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:34:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:34:57,913 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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) [2021-10-24 10:34:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:34:57,931 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2021-10-24 10:34:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:34:57,932 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 [2021-10-24 10:34:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:34:57,942 INFO L225 Difference]: With dead ends: 23 [2021-10-24 10:34:57,942 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 10:34:57,945 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 [2021-10-24 10:34:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 10:34:57,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 10:34:57,975 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) [2021-10-24 10:34:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-24 10:34:57,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2021-10-24 10:34:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:34:57,978 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-24 10:34:57,978 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) [2021-10-24 10:34:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-24 10:34:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:34:57,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:34:57,980 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:34:57,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:34:57,981 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:34:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:34:57,987 INFO L82 PathProgramCache]: Analyzing trace with hash -847321266, now seen corresponding path program 1 times [2021-10-24 10:34:57,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:34:57,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577326960] [2021-10-24 10:34:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:34:57,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:34:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:34:58,076 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:34:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:34:58,182 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:34:58,183 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:34:58,186 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:34:58,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:34:58,196 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:34:58,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:34:58 BoogieIcfgContainer [2021-10-24 10:34:58,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:34:58,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:34:58,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:34:58,237 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:34:58,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:34:57" (3/4) ... [2021-10-24 10:34:58,241 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:34:58,317 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:34:58,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:34:58,323 INFO L168 Benchmark]: Toolchain (without parser) took 2205.50 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 80.0 MB in the beginning and 116.5 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:58,325 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 121.6 MB. Free memory is still 98.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:58,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.75 ms. Allocated memory is still 121.6 MB. Free memory was 79.8 MB in the beginning and 86.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:58,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.12 ms. Allocated memory is still 121.6 MB. Free memory was 86.7 MB in the beginning and 84.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:58,328 INFO L168 Benchmark]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 121.6 MB. Free memory was 84.6 MB in the beginning and 83.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:58,328 INFO L168 Benchmark]: RCFGBuilder took 708.49 ms. Allocated memory is still 121.6 MB. Free memory was 83.0 MB in the beginning and 69.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:58,329 INFO L168 Benchmark]: TraceAbstraction took 771.71 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 68.8 MB in the beginning and 118.6 MB in the end (delta: -49.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:34:58,330 INFO L168 Benchmark]: Witness Printer took 85.23 ms. Allocated memory is still 146.8 MB. Free memory was 118.6 MB in the beginning and 116.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:34:58,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 121.6 MB. Free memory is still 98.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 519.75 ms. Allocated memory is still 121.6 MB. Free memory was 79.8 MB in the beginning and 86.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.12 ms. Allocated memory is still 121.6 MB. Free memory was 86.7 MB in the beginning and 84.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.33 ms. Allocated memory is still 121.6 MB. Free memory was 84.6 MB in the beginning and 83.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 708.49 ms. Allocated memory is still 121.6 MB. Free memory was 83.0 MB in the beginning and 69.3 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 771.71 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 68.8 MB in the beginning and 118.6 MB in the end (delta: -49.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 85.23 ms. Allocated memory is still 146.8 MB. Free memory was 118.6 MB in the beginning and 116.5 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: 551]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] int i = 0; [L537] i < 30 && __VERIFIER_nondet_int() [L537] i < 30 && __VERIFIER_nondet_int() [L537] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L545] p->h = i [L546] p->n = 0 [L547] p = a [L548] i = 0 [L549] COND TRUE p!=0 [L550] EXPR p->h [L550] COND TRUE p->h != 1 [L551] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 623.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 14.0ms, AutomataDifference: 55.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.8ms SsaConstructionTime, 97.2ms SatisfiabilityAnalysisTime, 67.6ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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! [2021-10-24 10:34:58,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f72c15b-6f2f-4616-b625-5c5d4f6ad5ed/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...