./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF --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 d97ba8b69128e43b30f4e3953a96913f3683509f4de403028a4cfb023afba567 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:50:42,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:50:42,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:50:42,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:50:42,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:50:42,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:50:42,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:50:42,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:50:42,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:50:42,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:50:42,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:50:42,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:50:42,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:50:42,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:50:42,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:50:42,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:50:42,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:50:42,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:50:42,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:50:42,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:50:42,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:50:42,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:50:42,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:50:42,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:50:42,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:50:42,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:50:42,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:50:42,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:50:42,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:50:42,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:50:42,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:50:42,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:50:42,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:50:42,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:50:42,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:50:42,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:50:42,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:50:42,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:50:42,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:50:42,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:50:42,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:50:42,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 05:50:42,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:50:42,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:50:42,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:50:42,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:50:42,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:50:42,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:50:42,761 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:50:42,761 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 05:50:42,761 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 05:50:42,761 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 05:50:42,762 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 05:50:42,762 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 05:50:42,763 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 05:50:42,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:50:42,763 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:50:42,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:50:42,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:50:42,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 05:50:42,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 05:50:42,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 05:50:42,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:50:42,764 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 05:50:42,764 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:50:42,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 05:50:42,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:50:42,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:50:42,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:50:42,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:50:42,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:50:42,767 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 05:50:42,767 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_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d97ba8b69128e43b30f4e3953a96913f3683509f4de403028a4cfb023afba567 [2021-11-20 05:50:43,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:50:43,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:50:43,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:50:43,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:50:43,140 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:50:43,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2021-11-20 05:50:43,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/data/9f654d1d3/ddcc482fbf7c46df99347b82f26f36e7/FLAG4a0271954 [2021-11-20 05:50:43,736 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:50:43,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2021-11-20 05:50:43,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/data/9f654d1d3/ddcc482fbf7c46df99347b82f26f36e7/FLAG4a0271954 [2021-11-20 05:50:44,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/data/9f654d1d3/ddcc482fbf7c46df99347b82f26f36e7 [2021-11-20 05:50:44,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:50:44,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:50:44,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:50:44,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:50:44,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:50:44,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47be4e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44, skipping insertion in model container [2021-11-20 05:50:44,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:50:44,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:50:44,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:50:44,361 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:50:44,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:50:44,390 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:50:44,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44 WrapperNode [2021-11-20 05:50:44,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:50:44,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:50:44,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:50:44,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:50:44,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,423 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2021-11-20 05:50:44,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:50:44,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:50:44,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:50:44,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:50:44,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:50:44,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:50:44,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:50:44,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:50:44,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (1/1) ... [2021-11-20 05:50:44,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 05:50:44,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:50:44,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 05:50:44,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 05:50:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:50:44,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:50:44,586 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:50:44,588 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:50:44,674 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:50:44,683 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:50:44,683 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 05:50:44,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:50:44 BoogieIcfgContainer [2021-11-20 05:50:44,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:50:44,687 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 05:50:44,688 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 05:50:44,691 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 05:50:44,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:50:44,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 05:50:44" (1/3) ... [2021-11-20 05:50:44,694 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ca2b9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:50:44, skipping insertion in model container [2021-11-20 05:50:44,694 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:50:44,694 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:50:44" (2/3) ... [2021-11-20 05:50:44,694 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ca2b9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:50:44, skipping insertion in model container [2021-11-20 05:50:44,694 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 05:50:44,695 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:50:44" (3/3) ... [2021-11-20 05:50:44,696 INFO L388 chiAutomizerObserver]: Analyzing ICFG Bangalore_v2.c [2021-11-20 05:50:44,757 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 05:50:44,758 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 05:50:44,758 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 05:50:44,758 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 05:50:44,758 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 05:50:44,758 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 05:50:44,758 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 05:50:44,758 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 05:50:44,772 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-11-20 05:50:44,791 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 05:50:44,791 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:50:44,791 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:50:44,797 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-20 05:50:44,797 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 05:50:44,797 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 05:50:44,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-11-20 05:50:44,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 05:50:44,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 05:50:44,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 05:50:44,800 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-20 05:50:44,800 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 05:50:44,806 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 3#L16true assume main_~y~0#1 >= 0; 5#L17-2true [2021-11-20 05:50:44,807 INFO L793 eck$LassoCheckResult]: Loop: 5#L17-2true assume !!(main_~x~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 5#L17-2true [2021-11-20 05:50:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:50:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 05:50:44,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:50:44,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574467910] [2021-11-20 05:50:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:44,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:50:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:50:44,904 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:50:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:50:44,930 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:50:44,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:50:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash 45, now seen corresponding path program 1 times [2021-11-20 05:50:44,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:50:44,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184022339] [2021-11-20 05:50:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:44,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:50:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:50:44,955 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:50:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:50:44,965 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:50:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:50:44,970 INFO L85 PathProgramCache]: Analyzing trace with hash 925612, now seen corresponding path program 1 times [2021-11-20 05:50:44,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:50:44,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309489234] [2021-11-20 05:50:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:44,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:50:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:50:44,984 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:50:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:50:44,989 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:50:45,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 05:50:45 BoogieIcfgContainer [2021-11-20 05:50:45,120 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 05:50:45,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:50:45,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:50:45,121 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:50:45,121 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:50:44" (3/4) ... [2021-11-20 05:50:45,123 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-20 05:50:45,155 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:50:45,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:50:45,157 INFO L158 Benchmark]: Toolchain (without parser) took 1047.99ms. Allocated memory is still 96.5MB. Free memory was 55.7MB in the beginning and 45.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:50:45,157 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:50:45,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.74ms. Allocated memory is still 96.5MB. Free memory was 55.5MB in the beginning and 72.4MB in the end (delta: -16.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:50:45,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.33ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 71.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:50:45,160 INFO L158 Benchmark]: Boogie Preprocessor took 18.02ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 70.1MB in the end (delta: 872.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:50:45,161 INFO L158 Benchmark]: RCFGBuilder took 242.36ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 62.3MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:50:45,162 INFO L158 Benchmark]: BuchiAutomizer took 433.23ms. Allocated memory is still 96.5MB. Free memory was 62.0MB in the beginning and 46.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 05:50:45,163 INFO L158 Benchmark]: Witness Printer took 35.07ms. Allocated memory is still 96.5MB. Free memory was 46.8MB in the beginning and 45.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:50:45,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.74ms. Allocated memory is still 96.5MB. Free memory was 55.5MB in the beginning and 72.4MB in the end (delta: -16.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.33ms. Allocated memory is still 96.5MB. Free memory was 72.4MB in the beginning and 71.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.02ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 70.1MB in the end (delta: 872.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 242.36ms. Allocated memory is still 96.5MB. Free memory was 70.1MB in the beginning and 62.3MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 433.23ms. Allocated memory is still 96.5MB. Free memory was 62.0MB in the beginning and 46.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 35.07ms. Allocated memory is still 96.5MB. Free memory was 46.8MB in the beginning and 45.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 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: 17]: 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 {y=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f9e0a1c=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c0b6bb=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE y >= 0 Loop: [L17] COND TRUE x >= 0 [L18] x = x - y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-20 05:50:45,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13af65d1-c606-44fc-8da6-75c77609e839/bin/uautomizer-DQz5hQGWxF/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)