./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_21.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer --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 0.2.0-a4ecdab [2020-11-29 19:13:58,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:13:58,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:13:58,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:13:58,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:13:58,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:13:58,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:13:58,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:13:58,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:13:58,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:13:58,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:13:58,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:13:58,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:13:58,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:13:58,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:13:58,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:13:58,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:13:58,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:13:58,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:13:58,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:13:58,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:13:58,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:13:58,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:13:58,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:13:58,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:13:58,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:13:58,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:13:58,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:13:58,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:13:58,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:13:58,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:13:58,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:13:58,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:13:58,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:13:58,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:13:58,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:13:58,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:13:58,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:13:58,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:13:58,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:13:58,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:13:58,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:13:58,908 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:13:58,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:13:58,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:13:58,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:13:58,912 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:13:58,913 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:13:58,913 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:13:58,913 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:13:58,913 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:13:58,914 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:13:58,915 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:13:58,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:13:58,916 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:13:58,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:13:58,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:13:58,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:13:58,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:13:58,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:13:58,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:13:58,917 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:13:58,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:13:58,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:13:58,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:13:58,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:13:58,918 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:13:58,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:13:58,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:13:58,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:13:58,919 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:13:58,922 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:13:58,923 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-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 012f84fd0ea677a0f91b2a112c75e9cee95427f9 [2020-11-29 19:13:59,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:13:59,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:13:59,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:13:59,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:13:59,283 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:13:59,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/NO_21.c [2020-11-29 19:13:59,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/data/e413b071e/e4dc7114e25d4f788a5f1afe353e50b7/FLAGcdeaac6a1 [2020-11-29 19:13:59,854 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:13:59,855 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/sv-benchmarks/c/termination-restricted-15/NO_21.c [2020-11-29 19:13:59,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/data/e413b071e/e4dc7114e25d4f788a5f1afe353e50b7/FLAGcdeaac6a1 [2020-11-29 19:14:00,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/data/e413b071e/e4dc7114e25d4f788a5f1afe353e50b7 [2020-11-29 19:14:00,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:14:00,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:14:00,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:14:00,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:14:00,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:14:00,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca3d5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00, skipping insertion in model container [2020-11-29 19:14:00,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:14:00,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:14:00,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:14:00,415 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:14:00,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:14:00,444 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:14:00,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00 WrapperNode [2020-11-29 19:14:00,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:14:00,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:14:00,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:14:00,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:14:00,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:14:00,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:14:00,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:14:00,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:14:00,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... [2020-11-29 19:14:00,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:14:00,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:14:00,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:14:00,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:14:00,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:14:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:14:00,783 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:14:00,783 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 19:14:00,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:00 BoogieIcfgContainer [2020-11-29 19:14:00,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:14:00,787 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:14:00,788 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:14:00,792 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:14:00,793 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:14:00,794 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:14:00" (1/3) ... [2020-11-29 19:14:00,795 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68789b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:14:00, skipping insertion in model container [2020-11-29 19:14:00,795 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:14:00,796 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:00" (2/3) ... [2020-11-29 19:14:00,796 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68789b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:14:00, skipping insertion in model container [2020-11-29 19:14:00,797 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:14:00,797 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:00" (3/3) ... [2020-11-29 19:14:00,799 INFO L373 chiAutomizerObserver]: Analyzing ICFG NO_21.c [2020-11-29 19:14:00,858 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:14:00,858 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:14:00,859 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:14:00,859 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:14:00,859 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:14:00,859 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:14:00,859 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:14:00,859 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:14:00,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-29 19:14:00,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:14:00,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:14:00,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:14:00,905 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:14:00,906 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:14:00,906 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:14:00,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-29 19:14:00,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:14:00,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:14:00,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:14:00,908 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:14:00,908 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:14:00,917 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 5#L9-2true [2020-11-29 19:14:00,918 INFO L796 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 [2020-11-29 19:14:00,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:00,935 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 19:14:00,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:00,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423115733] [2020-11-29 19:14:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:01,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:01,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:01,089 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:14:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:01,095 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-29 19:14:01,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:01,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190894002] [2020-11-29 19:14:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:01,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:01,129 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:01,132 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:14:01,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 19:14:01,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:01,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177797010] [2020-11-29 19:14:01,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:01,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:01,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:01,169 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:14:01,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:14:01 BoogieIcfgContainer [2020-11-29 19:14:01,321 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:14:01,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:14:01,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:14:01,323 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:14:01,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:00" (3/4) ... [2020-11-29 19:14:01,327 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:14:01,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c994f249-ef63-415e-a427-1b9149dcec4c/bin/uautomizer/witness.graphml [2020-11-29 19:14:01,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:14:01,379 INFO L168 Benchmark]: Toolchain (without parser) took 1139.02 ms. Allocated memory was 88.1 MB in the beginning and 125.8 MB in the end (delta: 37.7 MB). Free memory was 52.0 MB in the beginning and 78.2 MB in the end (delta: -26.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:01,380 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:14:01,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.04 ms. Allocated memory is still 88.1 MB. Free memory was 51.9 MB in the beginning and 43.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:01,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.96 ms. Allocated memory was 88.1 MB in the beginning and 125.8 MB in the end (delta: 37.7 MB). Free memory was 43.5 MB in the beginning and 105.2 MB in the end (delta: -61.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:01,383 INFO L168 Benchmark]: Boogie Preprocessor took 21.65 ms. Allocated memory is still 125.8 MB. Free memory was 105.2 MB in the beginning and 104.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:01,384 INFO L168 Benchmark]: RCFGBuilder took 264.13 ms. Allocated memory is still 125.8 MB. Free memory was 104.0 MB in the beginning and 96.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:01,385 INFO L168 Benchmark]: BuchiAutomizer took 534.04 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 79.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:01,389 INFO L168 Benchmark]: Witness Printer took 54.15 ms. Allocated memory is still 125.8 MB. Free memory was 79.7 MB in the beginning and 78.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:01,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 202.04 ms. Allocated memory is still 88.1 MB. Free memory was 51.9 MB in the beginning and 43.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.96 ms. Allocated memory was 88.1 MB in the beginning and 125.8 MB in the end (delta: 37.7 MB). Free memory was 43.5 MB in the beginning and 105.2 MB in the end (delta: -61.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.65 ms. Allocated memory is still 125.8 MB. Free memory was 105.2 MB in the beginning and 104.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 264.13 ms. Allocated memory is still 125.8 MB. Free memory was 104.0 MB in the beginning and 96.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 534.04 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 79.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 54.15 ms. Allocated memory is still 125.8 MB. Free memory was 79.7 MB in the beginning and 78.2 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 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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! Received shutdown request...