./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD --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 ............................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:54:21,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:54:21,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:54:21,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:54:21,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:54:21,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:54:21,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:54:21,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:54:21,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:54:21,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:54:21,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:54:21,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:54:21,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:54:21,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:54:21,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:54:21,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:54:21,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:54:21,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:54:21,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:54:21,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:54:21,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:54:21,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:54:21,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:54:21,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:54:21,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:54:21,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:54:21,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:54:21,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:54:21,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:54:21,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:54:21,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:54:21,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:54:21,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:54:21,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:54:21,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:54:21,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:54:21,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:54:21,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:54:21,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:54:21,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:54:21,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:54:21,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 22:54:21,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:54:21,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:54:21,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:54:21,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:54:21,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:54:21,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:54:21,455 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:54:21,456 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:54:21,456 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:54:21,456 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:54:21,456 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:54:21,456 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:54:21,457 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:54:21,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:54:21,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:54:21,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:54:21,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:54:21,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:54:21,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:54:21,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:54:21,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:54:21,459 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:54:21,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:54:21,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:54:21,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:54:21,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:54:21,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:54:21,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:54:21,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:54:21,462 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:54:21,462 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_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d97ba8b69128e43b30f4e3953a96913f3683509f4de403028a4cfb023afba567 [2021-10-28 22:54:21,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:54:21,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:54:21,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:54:21,728 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:54:21,729 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:54:21,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2021-10-28 22:54:21,828 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/data/c57548b6a/040e0a7c5e5b44dabaed394fd1668235/FLAGa0a5f0e6f [2021-10-28 22:54:22,277 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:54:22,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2021-10-28 22:54:22,292 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/data/c57548b6a/040e0a7c5e5b44dabaed394fd1668235/FLAGa0a5f0e6f [2021-10-28 22:54:22,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/data/c57548b6a/040e0a7c5e5b44dabaed394fd1668235 [2021-10-28 22:54:22,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:54:22,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:54:22,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:22,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:54:22,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:54:22,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3c6834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22, skipping insertion in model container [2021-10-28 22:54:22,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:54:22,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:54:22,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:22,858 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:54:22,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:22,891 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:54:22,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22 WrapperNode [2021-10-28 22:54:22,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:22,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:22,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:54:22,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:54:22,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:22,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:54:22,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:54:22,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:54:22,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:54:22,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:54:22,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:54:22,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:54:22,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (1/1) ... [2021-10-28 22:54:22,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:54:22,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:22,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:23,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:54:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:54:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:54:23,173 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:54:23,173 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 22:54:23,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:23 BoogieIcfgContainer [2021-10-28 22:54:23,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:54:23,178 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:54:23,178 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:54:23,181 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:54:23,182 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:54:23,182 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:54:22" (1/3) ... [2021-10-28 22:54:23,184 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@385cc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:54:23, skipping insertion in model container [2021-10-28 22:54:23,184 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:54:23,184 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:22" (2/3) ... [2021-10-28 22:54:23,184 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@385cc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:54:23, skipping insertion in model container [2021-10-28 22:54:23,185 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:54:23,185 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:23" (3/3) ... [2021-10-28 22:54:23,186 INFO L389 chiAutomizerObserver]: Analyzing ICFG Bangalore_v2.c [2021-10-28 22:54:23,248 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:54:23,248 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:54:23,248 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:54:23,249 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:54:23,249 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:54:23,249 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:54:23,249 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:54:23,249 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:54:23,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:23,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 22:54:23,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:54:23,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:54:23,291 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:54:23,291 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 22:54:23,291 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:54:23,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:23,293 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 22:54:23,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:54:23,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:54:23,294 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:54:23,294 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 22:54:23,301 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L16true assume main_~y~0 >= 0; 5#L17-2true [2021-10-28 22:54:23,301 INFO L793 eck$LassoCheckResult]: Loop: 5#L17-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 - main_~y~0; 5#L17-2true [2021-10-28 22:54:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-28 22:54:23,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:23,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588530725] [2021-10-28 22:54:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:23,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:23,380 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:54:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:23,400 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:54:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2021-10-28 22:54:23,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:23,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413201915] [2021-10-28 22:54:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:23,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:23,413 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:54:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:23,417 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:54:23,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:23,419 INFO L85 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2021-10-28 22:54:23,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:23,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993271358] [2021-10-28 22:54:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:23,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:23,427 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:54:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:23,435 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:54:23,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:54:23 BoogieIcfgContainer [2021-10-28 22:54:23,557 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:54:23,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:54:23,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:54:23,558 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:54:23,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:23" (3/4) ... [2021-10-28 22:54:23,561 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 22:54:23,630 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:54:23,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:54:23,633 INFO L168 Benchmark]: Toolchain (without parser) took 974.19 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 63.2 MB in the beginning and 85.3 MB in the end (delta: -22.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:23,633 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 96.5 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:23,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.86 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 62.9 MB in the beginning and 113.3 MB in the end (delta: -50.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:23,635 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.01 ms. Allocated memory is still 136.3 MB. Free memory was 113.3 MB in the beginning and 111.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:23,652 INFO L168 Benchmark]: Boogie Preprocessor took 16.68 ms. Allocated memory is still 136.3 MB. Free memory was 111.9 MB in the beginning and 111.1 MB in the end (delta: 730.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:23,653 INFO L168 Benchmark]: RCFGBuilder took 237.34 ms. Allocated memory is still 136.3 MB. Free memory was 111.1 MB in the beginning and 102.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:23,654 INFO L168 Benchmark]: BuchiAutomizer took 379.31 ms. Allocated memory is still 136.3 MB. Free memory was 102.8 MB in the beginning and 86.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:23,655 INFO L168 Benchmark]: Witness Printer took 73.00 ms. Allocated memory is still 136.3 MB. Free memory was 86.7 MB in the beginning and 85.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:23,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 96.5 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 229.86 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 62.9 MB in the beginning and 113.3 MB in the end (delta: -50.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.01 ms. Allocated memory is still 136.3 MB. Free memory was 113.3 MB in the beginning and 111.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.68 ms. Allocated memory is still 136.3 MB. Free memory was 111.9 MB in the beginning and 111.1 MB in the end (delta: 730.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 237.34 ms. Allocated memory is still 136.3 MB. Free memory was 111.1 MB in the beginning and 102.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 379.31 ms. Allocated memory is still 136.3 MB. Free memory was 102.8 MB in the beginning and 86.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 73.00 ms. Allocated memory is still 136.3 MB. Free memory was 86.7 MB in the beginning and 85.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: 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: No data available 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3beb4dca=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d9cf32b=0, x=0, y=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! [2021-10-28 22:54:23,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81e4442-e480-41f8-a55e-c67fced8876a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...