./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_21.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3 --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 012f84fd0ea677a0f91b2a112c75e9cee95427f9 ............................................................................................................................................................................................................................................................................. 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-5709675 [2021-10-15 19:51:43,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:51:43,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:51:43,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:51:43,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:51:43,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:51:43,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:51:43,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:51:43,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:51:43,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:51:43,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:51:43,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:51:43,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:51:43,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:51:43,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:51:43,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:51:43,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:51:43,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:51:43,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:51:43,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:51:43,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:51:43,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:51:43,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:51:43,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:51:43,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:51:43,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:51:43,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:51:43,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:51:43,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:51:43,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:51:43,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:51:43,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:51:43,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:51:43,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:51:43,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:51:43,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:51:43,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:51:43,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:51:43,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:51:43,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:51:43,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:51:43,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-15 19:51:43,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:51:43,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:51:43,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:51:43,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:51:43,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:51:43,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:51:43,467 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:51:43,467 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-15 19:51:43,468 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-15 19:51:43,468 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-15 19:51:43,469 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-15 19:51:43,469 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-15 19:51:43,469 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-15 19:51:43,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:51:43,470 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:51:43,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:51:43,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:51:43,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-15 19:51:43,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-15 19:51:43,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-15 19:51:43,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:51:43,471 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-15 19:51:43,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:51:43,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-15 19:51:43,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:51:43,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:51:43,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:51:43,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:51:43,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:51:43,474 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-15 19:51:43,474 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_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 012f84fd0ea677a0f91b2a112c75e9cee95427f9 [2021-10-15 19:51:43,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:51:43,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:51:43,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:51:43,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:51:43,792 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:51:43,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/termination-restricted-15/NO_21.c [2021-10-15 19:51:43,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/data/07c22384f/3bf5fe1d37244c629a4c0ac325799ef8/FLAG012018634 [2021-10-15 19:51:44,328 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:51:44,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/sv-benchmarks/c/termination-restricted-15/NO_21.c [2021-10-15 19:51:44,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/data/07c22384f/3bf5fe1d37244c629a4c0ac325799ef8/FLAG012018634 [2021-10-15 19:51:44,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/data/07c22384f/3bf5fe1d37244c629a4c0ac325799ef8 [2021-10-15 19:51:44,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:51:44,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:51:44,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:44,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:51:44,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:51:44,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695e65e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44, skipping insertion in model container [2021-10-15 19:51:44,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:51:44,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:51:44,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:44,917 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:51:44,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:51:44,968 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:51:44,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44 WrapperNode [2021-10-15 19:51:44,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:51:44,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:44,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:51:44,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:51:44,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:44,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:51:44,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:51:44,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:51:44,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:51:45,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:45,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:45,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:45,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:45,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:45,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:45,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:45,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:51:45,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:51:45,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:51:45,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:51:45,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (1/1) ... [2021-10-15 19:51:45,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 19:51:45,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:51:45,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 19:51:45,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-15 19:51:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:51:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:51:45,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:51:45,225 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-15 19:51:45,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:45 BoogieIcfgContainer [2021-10-15 19:51:45,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:51:45,229 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-15 19:51:45,229 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-15 19:51:45,233 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-15 19:51:45,233 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:51:45,234 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 07:51:44" (1/3) ... [2021-10-15 19:51:45,235 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29583a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 07:51:45, skipping insertion in model container [2021-10-15 19:51:45,236 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:51:45,236 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:51:44" (2/3) ... [2021-10-15 19:51:45,237 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29583a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 07:51:45, skipping insertion in model container [2021-10-15 19:51:45,237 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 19:51:45,238 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:45" (3/3) ... [2021-10-15 19:51:45,239 INFO L389 chiAutomizerObserver]: Analyzing ICFG NO_21.c [2021-10-15 19:51:45,299 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-15 19:51:45,299 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-15 19:51:45,299 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-15 19:51:45,299 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-15 19:51:45,300 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-15 19:51:45,300 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-15 19:51:45,300 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-15 19:51:45,300 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-15 19:51:45,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-10-15 19:51:45,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-15 19:51:45,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:51:45,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:51:45,339 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-15 19:51:45,339 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-15 19:51:45,339 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-15 19:51:45,339 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-10-15 19:51:45,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-15 19:51:45,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 19:51:45,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 19:51:45,341 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-15 19:51:45,341 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-15 19:51:45,347 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 5#L9-2true [2021-10-15 19:51:45,348 INFO L793 eck$LassoCheckResult]: Loop: 5#L9-2true assume !!(main_~i~0 < 100);main_~i~0 := 1 + main_~i~0;main_~i~0 := main_~i~0 - 1; 5#L9-2true [2021-10-15 19:51:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:45,353 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-15 19:51:45,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:51:45,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983712103] [2021-10-15 19:51:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:45,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:51:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:45,443 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:51:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:45,468 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:51:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:45,472 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-15 19:51:45,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:51:45,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490263726] [2021-10-15 19:51:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:45,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:51:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:45,484 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:51:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:45,499 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:51:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:51:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-15 19:51:45,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:51:45,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866139131] [2021-10-15 19:51:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:51:45,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:51:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:45,514 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:51:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:51:45,524 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:51:45,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 07:51:45 BoogieIcfgContainer [2021-10-15 19:51:45,662 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-15 19:51:45,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:51:45,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:51:45,663 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:51:45,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:51:45" (3/4) ... [2021-10-15 19:51:45,666 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-15 19:51:45,713 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:51:45,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:51:45,716 INFO L168 Benchmark]: Toolchain (without parser) took 981.74 ms. Allocated memory was 79.7 MB in the beginning and 127.9 MB in the end (delta: 48.2 MB). Free memory was 44.2 MB in the beginning and 79.7 MB in the end (delta: -35.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:45,717 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory is still 60.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:45,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.55 ms. Allocated memory was 79.7 MB in the beginning and 127.9 MB in the end (delta: 48.2 MB). Free memory was 44.1 MB in the beginning and 106.0 MB in the end (delta: -62.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:45,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.92 ms. Allocated memory is still 127.9 MB. Free memory was 106.0 MB in the beginning and 104.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:51:45,720 INFO L168 Benchmark]: Boogie Preprocessor took 15.49 ms. Allocated memory is still 127.9 MB. Free memory was 104.8 MB in the beginning and 103.9 MB in the end (delta: 923.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:45,721 INFO L168 Benchmark]: RCFGBuilder took 214.15 ms. Allocated memory is still 127.9 MB. Free memory was 103.9 MB in the beginning and 96.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:45,722 INFO L168 Benchmark]: BuchiAutomizer took 433.25 ms. Allocated memory is still 127.9 MB. Free memory was 96.0 MB in the beginning and 81.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:45,723 INFO L168 Benchmark]: Witness Printer took 50.84 ms. Allocated memory is still 127.9 MB. Free memory was 81.2 MB in the beginning and 79.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:51:45,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory is still 60.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.55 ms. Allocated memory was 79.7 MB in the beginning and 127.9 MB in the end (delta: 48.2 MB). Free memory was 44.1 MB in the beginning and 106.0 MB in the end (delta: -62.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.92 ms. Allocated memory is still 127.9 MB. Free memory was 106.0 MB in the beginning and 104.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.49 ms. Allocated memory is still 127.9 MB. Free memory was 104.8 MB in the beginning and 103.9 MB in the end (delta: 923.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 214.15 ms. Allocated memory is still 127.9 MB. Free memory was 103.9 MB in the beginning and 96.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 433.25 ms. Allocated memory is still 127.9 MB. Free memory was 96.0 MB in the beginning and 81.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 50.84 ms. Allocated memory is still 127.9 MB. Free memory was 81.2 MB in the beginning and 79.7 MB in the end (delta: 1.6 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: 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 {\result=0, i=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 = 0 Loop: [L9] COND TRUE i < 100 [L10] i = i+1 [L11] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-15 19:51:45,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce32fbb-3e90-4a67-9755-9b6548ae192c/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...