./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y --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 afd40820c7a09c073d225c09c6690862ff04506300463cb312087d541b42d981 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:03:14,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:03:14,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:03:14,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:03:14,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:03:14,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:03:14,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:03:14,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:03:14,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:03:14,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:03:14,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:03:14,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:03:14,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:03:14,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:03:14,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:03:14,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:03:14,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:03:14,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:03:14,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:03:14,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:03:14,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:03:14,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:03:14,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:03:14,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:03:14,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:03:14,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:03:14,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:03:14,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:03:14,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:03:14,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:03:14,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:03:14,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:03:14,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:03:14,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:03:14,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:03:14,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:03:14,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:03:14,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:03:14,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:03:14,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:03:14,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:03:14,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-13 18:03:14,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:03:14,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:03:14,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:03:14,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:03:14,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:03:14,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:03:14,515 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:03:14,515 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-13 18:03:14,515 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-13 18:03:14,516 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-13 18:03:14,516 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-13 18:03:14,516 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-13 18:03:14,517 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-13 18:03:14,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:03:14,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:03:14,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:03:14,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:03:14,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-13 18:03:14,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-13 18:03:14,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-13 18:03:14,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:03:14,519 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-13 18:03:14,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:03:14,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-13 18:03:14,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:03:14,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:03:14,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:03:14,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:03:14,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:03:14,523 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-13 18:03:14,523 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_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afd40820c7a09c073d225c09c6690862ff04506300463cb312087d541b42d981 [2021-11-13 18:03:14,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:03:14,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:03:14,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:03:14,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:03:14,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:03:14,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/termination-restricted-15/Ex02.c [2021-11-13 18:03:14,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/data/034a54d43/fea08bfb1fc94c988c6848be146838e8/FLAG674f6696b [2021-11-13 18:03:15,592 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:03:15,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/sv-benchmarks/c/termination-restricted-15/Ex02.c [2021-11-13 18:03:15,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/data/034a54d43/fea08bfb1fc94c988c6848be146838e8/FLAG674f6696b [2021-11-13 18:03:15,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/data/034a54d43/fea08bfb1fc94c988c6848be146838e8 [2021-11-13 18:03:15,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:03:15,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:03:15,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:03:15,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:03:15,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:03:15,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:03:15" (1/1) ... [2021-11-13 18:03:15,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17373704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:15, skipping insertion in model container [2021-11-13 18:03:15,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:03:15" (1/1) ... [2021-11-13 18:03:16,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:03:16,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:03:16,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:03:16,219 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:03:16,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:03:16,242 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:03:16,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16 WrapperNode [2021-11-13 18:03:16,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:03:16,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:03:16,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:03:16,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:03:16,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:03:16,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:03:16,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:03:16,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:03:16,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:03:16,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:03:16,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:03:16,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:03:16,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (1/1) ... [2021-11-13 18:03:16,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:03:16,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:03:16,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:03:16,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-13 18:03:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:03:16,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:03:16,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:03:16,601 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:03:16,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:03:16 BoogieIcfgContainer [2021-11-13 18:03:16,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:03:16,611 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-13 18:03:16,611 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-13 18:03:16,616 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-13 18:03:16,617 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:03:16,618 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 06:03:15" (1/3) ... [2021-11-13 18:03:16,620 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@386aa268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:03:16, skipping insertion in model container [2021-11-13 18:03:16,620 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:03:16,621 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:16" (2/3) ... [2021-11-13 18:03:16,621 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@386aa268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:03:16, skipping insertion in model container [2021-11-13 18:03:16,622 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:03:16,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:03:16" (3/3) ... [2021-11-13 18:03:16,624 INFO L388 chiAutomizerObserver]: Analyzing ICFG Ex02.c [2021-11-13 18:03:16,702 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-13 18:03:16,703 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-13 18:03:16,703 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-13 18:03:16,703 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-13 18:03:16,703 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-13 18:03:16,704 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-13 18:03:16,704 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-13 18:03:16,704 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-13 18:03:16,726 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) [2021-11-13 18:03:16,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-13 18:03:16,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:03:16,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:03:16,758 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-13 18:03:16,759 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-13 18:03:16,759 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-13 18:03:16,760 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) [2021-11-13 18:03:16,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-13 18:03:16,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:03:16,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:03:16,763 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-13 18:03:16,763 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-13 18:03:16,772 INFO L791 eck$LassoCheckResult]: Stem: 5#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_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 4#L10-2true [2021-11-13 18:03:16,773 INFO L793 eck$LassoCheckResult]: Loop: 4#L10-2true assume !!(main_~i~0#1 > 0); 6#L10true assume !(5 != main_~i~0#1); 4#L10-2true [2021-11-13 18:03:16,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:16,783 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-13 18:03:16,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:16,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118971258] [2021-11-13 18:03:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:16,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:03:16,888 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:03:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:03:16,910 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:03:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:16,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2021-11-13 18:03:16,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:16,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532663907] [2021-11-13 18:03:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:16,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:03:16,923 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:03:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:03:16,929 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:03:16,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2021-11-13 18:03:16,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:16,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147688101] [2021-11-13 18:03:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:16,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:03:16,959 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:03:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:03:16,965 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:03:17,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 06:03:17 BoogieIcfgContainer [2021-11-13 18:03:17,075 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-13 18:03:17,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:03:17,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:03:17,077 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:03:17,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:03:16" (3/4) ... [2021-11-13 18:03:17,080 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-13 18:03:17,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:03:17,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:03:17,116 INFO L158 Benchmark]: Toolchain (without parser) took 1126.95ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 47.6MB in the end (delta: 18.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-11-13 18:03:17,116 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 96.5MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:03:17,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.03ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 73.4MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:03:17,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.28ms. Allocated memory is still 96.5MB. Free memory was 73.4MB in the beginning and 72.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:03:17,119 INFO L158 Benchmark]: Boogie Preprocessor took 20.17ms. Allocated memory is still 96.5MB. Free memory was 72.2MB in the beginning and 71.4MB in the end (delta: 803.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:03:17,120 INFO L158 Benchmark]: RCFGBuilder took 307.95ms. Allocated memory is still 96.5MB. Free memory was 71.1MB in the beginning and 63.6MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 18:03:17,120 INFO L158 Benchmark]: BuchiAutomizer took 464.68ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 48.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 18:03:17,121 INFO L158 Benchmark]: Witness Printer took 37.55ms. Allocated memory is still 96.5MB. Free memory was 48.9MB in the beginning and 47.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:03:17,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 96.5MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.03ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 73.4MB in the end (delta: -7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.28ms. Allocated memory is still 96.5MB. Free memory was 73.4MB in the beginning and 72.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.17ms. Allocated memory is still 96.5MB. Free memory was 72.2MB in the beginning and 71.4MB in the end (delta: 803.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 307.95ms. Allocated memory is still 96.5MB. Free memory was 71.1MB in the beginning and 63.6MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 464.68ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 48.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 37.55ms. Allocated memory is still 96.5MB. Free memory was 48.9MB in the beginning and 47.6MB in the end (delta: 1.3MB). 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: 9]: 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 {i=5, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d28cd76=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 [L10] COND FALSE !(i != 5) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-13 18:03:17,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b302778-75c9-4ce0-ac58-b8f6b62013c3/bin/uautomizer-YU5uOKAj3y/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)