./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test30-1.c --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_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/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_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test30-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/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_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/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 d6fbbb3f72a429bcf66c4c5832d8f584c26ac0d5 ......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:03:25,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:03:25,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:03:25,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:03:25,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:03:25,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:03:25,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:03:25,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:03:25,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:03:25,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:03:25,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:03:25,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:03:25,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:03:25,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:03:25,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:03:25,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:03:25,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:03:25,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:03:25,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:03:25,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:03:25,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:03:25,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:03:25,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:03:25,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:03:25,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:03:25,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:03:25,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:03:25,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:03:25,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:03:25,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:03:25,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:03:25,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:03:25,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:03:25,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:03:25,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:03:25,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:03:25,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:03:25,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:03:25,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:03:25,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:03:25,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:03:25,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:03:25,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:03:25,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:03:25,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:03:25,855 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:03:25,855 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:03:25,855 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:03:25,856 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:03:25,856 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:03:25,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:03:25,857 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:03:25,857 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:03:25,857 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:03:25,858 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:03:25,858 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:03:25,858 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:03:25,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:03:25,867 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:03:25,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:03:25,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:03:25,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:03:25,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:03:25,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:03:25,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:03:25,869 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:03:25,869 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:03:25,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:03:25,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:03:25,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:03:25,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:03:25,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:03:25,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:03:25,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:03:25,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:03:25,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:03:25,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:03:25,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:03:25,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:03:25,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:03:25,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:03:25,875 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_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6fbbb3f72a429bcf66c4c5832d8f584c26ac0d5 [2021-10-16 02:03:26,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:03:26,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:03:26,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:03:26,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:03:26,222 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:03:26,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-regression/test30-1.c [2021-10-16 02:03:26,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/data/e398c5077/5ab6a3e667d84e37a4398b5eff83889a/FLAG4746d6c3b [2021-10-16 02:03:26,755 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:03:26,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/sv-benchmarks/c/ldv-regression/test30-1.c [2021-10-16 02:03:26,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/data/e398c5077/5ab6a3e667d84e37a4398b5eff83889a/FLAG4746d6c3b [2021-10-16 02:03:27,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/data/e398c5077/5ab6a3e667d84e37a4398b5eff83889a [2021-10-16 02:03:27,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:03:27,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:03:27,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:03:27,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:03:27,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:03:27,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6d85a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27, skipping insertion in model container [2021-10-16 02:03:27,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:03:27,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:03:27,359 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_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/sv-benchmarks/c/ldv-regression/test30-1.c[560,573] [2021-10-16 02:03:27,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:03:27,376 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:03:27,393 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_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/sv-benchmarks/c/ldv-regression/test30-1.c[560,573] [2021-10-16 02:03:27,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:03:27,423 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:03:27,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27 WrapperNode [2021-10-16 02:03:27,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:03:27,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:03:27,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:03:27,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:03:27,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:03:27,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:03:27,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:03:27,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:03:27,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:03:27,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:03:27,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:03:27,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:03:27,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (1/1) ... [2021-10-16 02:03:27,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:03:27,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:03:27,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:03:27,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:03:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:03:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-16 02:03:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:03:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:03:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:03:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:03:27,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:03:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:03:28,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:03:28,065 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 02:03:28,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:03:28 BoogieIcfgContainer [2021-10-16 02:03:28,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:03:28,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:03:28,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:03:28,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:03:28,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:03:27" (1/3) ... [2021-10-16 02:03:28,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4aba1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:03:28, skipping insertion in model container [2021-10-16 02:03:28,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:03:27" (2/3) ... [2021-10-16 02:03:28,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4aba1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:03:28, skipping insertion in model container [2021-10-16 02:03:28,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:03:28" (3/3) ... [2021-10-16 02:03:28,078 INFO L111 eAbstractionObserver]: Analyzing ICFG test30-1.c [2021-10-16 02:03:28,084 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:03:28,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:03:28,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:03:28,159 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 02:03:28,160 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:03:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 02:03:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:03:28,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:03:28,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:03:28,201 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:03:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:03:28,212 INFO L82 PathProgramCache]: Analyzing trace with hash 49303, now seen corresponding path program 1 times [2021-10-16 02:03:28,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:03:28,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915506915] [2021-10-16 02:03:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:03:28,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:03:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:03:28,518 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 02:03:28,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:03:28,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915506915] [2021-10-16 02:03:28,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915506915] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:03:28,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:03:28,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:03:28,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053173745] [2021-10-16 02:03:28,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:03:28,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:03:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:03:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:03:28,548 INFO L87 Difference]: Start difference. First operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 02:03:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:03:28,568 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-10-16 02:03:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:03:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-16 02:03:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:03:28,590 INFO L225 Difference]: With dead ends: 8 [2021-10-16 02:03:28,590 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:03:28,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:03:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:03:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:03:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 02:03:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:03:28,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2021-10-16 02:03:28,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:03:28,634 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:03:28,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 02:03:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:03:28,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:03:28,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:03:28,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:03:28,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:03:28,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:03:28,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:03:28,656 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:03:28,656 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:03:28,657 INFO L853 garLoopResultBuilder]: At program point L28(lines 22 35) the Hoare annotation is: false [2021-10-16 02:03:28,657 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 29) no Hoare annotation was computed. [2021-10-16 02:03:28,657 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2021-10-16 02:03:28,657 INFO L860 garLoopResultBuilder]: At program point L34(lines 21 35) the Hoare annotation is: true [2021-10-16 02:03:28,662 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:03:28,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:03:28 BoogieIcfgContainer [2021-10-16 02:03:28,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:03:28,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:03:28,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:03:28,671 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:03:28,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:03:28" (3/4) ... [2021-10-16 02:03:28,674 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:03:28,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-16 02:03:28,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:03:28,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:03:28,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:03:28,732 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:03:28,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:03:28,735 INFO L168 Benchmark]: Toolchain (without parser) took 1588.66 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 60.6 MB in the beginning and 92.8 MB in the end (delta: -32.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:03:28,736 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 66.4 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:03:28,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.90 ms. Allocated memory is still 96.5 MB. Free memory was 60.4 MB in the beginning and 71.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:03:28,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.21 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 70.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:03:28,738 INFO L168 Benchmark]: Boogie Preprocessor took 56.74 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 69.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:03:28,738 INFO L168 Benchmark]: RCFGBuilder took 515.22 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 54.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:03:28,739 INFO L168 Benchmark]: TraceAbstraction took 598.97 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 54.4 MB in the beginning and 95.5 MB in the end (delta: -41.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:03:28,740 INFO L168 Benchmark]: Witness Printer took 62.91 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 92.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:03:28,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 66.4 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.90 ms. Allocated memory is still 96.5 MB. Free memory was 60.4 MB in the beginning and 71.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.21 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 70.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.74 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 69.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 515.22 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 54.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 598.97 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 54.4 MB in the beginning and 95.5 MB in the end (delta: -41.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 62.91 ms. Allocated memory is still 121.6 MB. Free memory was 95.5 MB in the beginning and 92.8 MB in the end (delta: 2.8 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 - PositiveResult [Line: 33]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 516.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 27.9ms, AutomataDifference: 64.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 15.3ms, InitialAbstractionConstructionTime: 11.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.4ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.5ms SsaConstructionTime, 70.6ms SatisfiabilityAnalysisTime, 135.8ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:03:28,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6077b048-ecd7-4610-b36e-8e9eea9dbcaf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...