./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a10720b7613c5e2eb453af920488d48ff40b71a0acd05114bf4a692390bb0e0c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:41:50,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:41:50,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:41:50,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:41:50,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:41:50,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:41:50,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:41:50,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:41:50,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:41:50,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:41:50,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:41:50,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:41:50,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:41:50,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:41:50,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:41:50,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:41:50,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:41:50,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:41:50,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:41:50,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:41:50,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:41:50,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:41:50,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:41:50,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:41:50,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:41:50,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:41:50,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:41:50,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:41:50,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:41:50,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:41:50,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:41:50,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:41:50,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:41:50,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:41:50,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:41:50,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:41:50,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:41:50,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:41:50,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:41:50,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:41:50,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:41:50,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-23 12:41:50,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:41:50,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:41:50,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:41:50,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:41:50,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:41:50,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:41:50,834 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:41:50,834 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 12:41:50,834 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 12:41:50,834 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 12:41:50,836 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 12:41:50,836 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 12:41:50,836 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 12:41:50,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:41:50,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:41:50,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:41:50,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:41:50,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 12:41:50,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 12:41:50,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 12:41:50,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:41:50,839 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 12:41:50,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:41:50,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 12:41:50,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:41:50,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:41:50,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:41:50,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:41:50,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:41:50,841 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 12:41:50,842 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a10720b7613c5e2eb453af920488d48ff40b71a0acd05114bf4a692390bb0e0c [2021-11-23 12:41:51,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:41:51,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:41:51,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:41:51,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:41:51,165 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:41:51,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/termination-restricted-15/NO_02.c [2021-11-23 12:41:51,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/data/5b440fb5f/ecafa008fdae46949e44da1ad5c0412f/FLAG15a9b97a4 [2021-11-23 12:41:51,689 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:41:51,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/sv-benchmarks/c/termination-restricted-15/NO_02.c [2021-11-23 12:41:51,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/data/5b440fb5f/ecafa008fdae46949e44da1ad5c0412f/FLAG15a9b97a4 [2021-11-23 12:41:52,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/data/5b440fb5f/ecafa008fdae46949e44da1ad5c0412f [2021-11-23 12:41:52,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:41:52,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:41:52,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:41:52,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:41:52,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:41:52,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1daaf59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52, skipping insertion in model container [2021-11-23 12:41:52,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:41:52,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:41:52,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:41:52,272 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:41:52,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:41:52,323 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:41:52,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52 WrapperNode [2021-11-23 12:41:52,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:41:52,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:41:52,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:41:52,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:41:52,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,360 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2021-11-23 12:41:52,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:41:52,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:41:52,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:41:52,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:41:52,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:41:52,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:41:52,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:41:52,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:41:52,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (1/1) ... [2021-11-23 12:41:52,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 12:41:52,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:41:52,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 12:41:52,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 12:41:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:41:52,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:41:52,561 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:41:52,563 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:41:52,663 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:41:52,671 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:41:52,672 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 12:41:52,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:41:52 BoogieIcfgContainer [2021-11-23 12:41:52,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:41:52,676 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 12:41:52,677 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 12:41:52,681 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 12:41:52,682 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 12:41:52,682 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 12:41:52" (1/3) ... [2021-11-23 12:41:52,684 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fb0cabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:41:52, skipping insertion in model container [2021-11-23 12:41:52,685 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 12:41:52,685 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:41:52" (2/3) ... [2021-11-23 12:41:52,685 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fb0cabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:41:52, skipping insertion in model container [2021-11-23 12:41:52,686 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 12:41:52,686 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:41:52" (3/3) ... [2021-11-23 12:41:52,688 INFO L388 chiAutomizerObserver]: Analyzing ICFG NO_02.c [2021-11-23 12:41:52,742 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 12:41:52,742 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 12:41:52,742 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 12:41:52,742 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 12:41:52,743 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 12:41:52,743 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 12:41:52,743 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 12:41:52,743 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 12:41:52,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-11-23 12:41:52,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-23 12:41:52,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:41:52,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:41:52,796 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 12:41:52,796 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 12:41:52,797 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 12:41:52,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-11-23 12:41:52,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-23 12:41:52,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:41:52,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:41:52,800 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 12:41:52,800 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 12:41:52,808 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 5#L10-2true [2021-11-23 12:41:52,808 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~i~0#1 < 100);main_~j~0#1 := 0; 3#L12-2true assume !(main_~j~0#1 < 1); 8#L12-3true main_~i~0#1 := 1 + main_~i~0#1; 5#L10-2true [2021-11-23 12:41:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-23 12:41:52,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:52,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531120819] [2021-11-23 12:41:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:52,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:41:52,907 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:41:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:41:52,929 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:41:52,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-11-23 12:41:52,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:52,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875615976] [2021-11-23 12:41:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:52,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:53,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:53,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875615976] [2021-11-23 12:41:53,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875615976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:41:53,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:41:53,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:41:53,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612022642] [2021-11-23 12:41:53,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:41:53,042 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 12:41:53,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:41:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:41:53,134 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) 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) [2021-11-23 12:41:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:53,148 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-11-23 12:41:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:41:53,155 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 8 transitions. [2021-11-23 12:41:53,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-23 12:41:53,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 4 states and 4 transitions. [2021-11-23 12:41:53,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-23 12:41:53,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-11-23 12:41:53,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 4 transitions. [2021-11-23 12:41:53,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:41:53,163 INFO L681 BuchiCegarLoop]: Abstraction has 4 states and 4 transitions. [2021-11-23 12:41:53,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 4 transitions. [2021-11-23 12:41:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2021-11-23 12:41:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-23 12:41:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2021-11-23 12:41:53,194 INFO L704 BuchiCegarLoop]: Abstraction has 4 states and 4 transitions. [2021-11-23 12:41:53,194 INFO L587 BuchiCegarLoop]: Abstraction has 4 states and 4 transitions. [2021-11-23 12:41:53,194 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 12:41:53,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 4 transitions. [2021-11-23 12:41:53,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-23 12:41:53,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 12:41:53,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 12:41:53,196 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 12:41:53,196 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-23 12:41:53,196 INFO L791 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 29#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 27#L10-2 assume !!(main_~i~0#1 < 100);main_~j~0#1 := 0; 26#L12-2 [2021-11-23 12:41:53,196 INFO L793 eck$LassoCheckResult]: Loop: 26#L12-2 assume !!(main_~j~0#1 < 1);main_~j~0#1 := main_~j~0#1; 26#L12-2 [2021-11-23 12:41:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-23 12:41:53,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:53,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311293559] [2021-11-23 12:41:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:53,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:41:53,205 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:41:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:41:53,209 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:41:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-11-23 12:41:53,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:53,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985793078] [2021-11-23 12:41:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:53,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:41:53,219 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:41:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:41:53,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:41:53,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:53,240 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-11-23 12:41:53,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:53,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236131077] [2021-11-23 12:41:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:53,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:41:53,248 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:41:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:41:53,261 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:41:53,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 12:41:53 BoogieIcfgContainer [2021-11-23 12:41:53,388 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 12:41:53,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:41:53,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:41:53,390 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:41:53,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:41:52" (3/4) ... [2021-11-23 12:41:53,393 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-23 12:41:53,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:41:53,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:41:53,432 INFO L158 Benchmark]: Toolchain (without parser) took 1355.38ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 59.7MB in the beginning and 98.5MB in the end (delta: -38.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:41:53,433 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 64.7MB in the beginning and 64.6MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:41:53,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.82ms. Allocated memory is still 94.4MB. Free memory was 59.5MB in the beginning and 72.0MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:41:53,435 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.07ms. Allocated memory is still 94.4MB. Free memory was 72.0MB in the beginning and 70.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:41:53,435 INFO L158 Benchmark]: Boogie Preprocessor took 23.56ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 70.0MB in the end (delta: 750.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:41:53,436 INFO L158 Benchmark]: RCFGBuilder took 288.27ms. Allocated memory is still 94.4MB. Free memory was 69.8MB in the beginning and 62.0MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:41:53,437 INFO L158 Benchmark]: BuchiAutomizer took 711.87ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 62.0MB in the beginning and 98.7MB in the end (delta: -36.7MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2021-11-23 12:41:53,438 INFO L158 Benchmark]: Witness Printer took 42.43ms. Allocated memory is still 121.6MB. Free memory was 98.6MB in the beginning and 98.5MB in the end (delta: 166.9kB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-23 12:41:53,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 64.7MB in the beginning and 64.6MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.82ms. Allocated memory is still 94.4MB. Free memory was 59.5MB in the beginning and 72.0MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.07ms. Allocated memory is still 94.4MB. Free memory was 72.0MB in the beginning and 70.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.56ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 70.0MB in the end (delta: 750.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 288.27ms. Allocated memory is still 94.4MB. Free memory was 69.8MB in the beginning and 62.0MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 711.87ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 62.0MB in the beginning and 98.7MB in the end (delta: -36.7MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Witness Printer took 42.43ms. Allocated memory is still 121.6MB. Free memory was 98.6MB in the beginning and 98.5MB in the end (delta: 166.9kB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 4 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 7 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 12]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {j=0, i=0, \result=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 12]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] i = 0 [L10] COND TRUE i < 100 [L11] j = 0 Loop: [L12] COND TRUE j < 1 [L13] j = j+0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 12:41:53,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f781824-421e-4442-8529-e1ba06934d07/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)