./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.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_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/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 c81b642bdc34318660f50d5b284278ba8988a3d4 .................................................................................................................................................................................................................................................................................................................................. 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 [2020-11-30 00:35:17,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:35:17,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:35:17,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:35:17,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:35:17,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:35:17,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:35:17,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:35:17,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:35:17,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:35:17,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:35:17,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:35:17,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:35:17,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:35:17,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:35:17,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:35:17,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:35:17,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:35:17,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:35:17,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:35:17,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:35:17,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:35:17,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:35:17,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:35:17,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:35:17,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:35:17,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:35:17,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:35:17,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:35:17,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:35:17,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:35:17,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:35:17,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:35:17,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:35:17,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:35:17,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:35:17,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:35:17,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:35:17,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:35:17,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:35:17,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:35:17,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:35:17,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:35:17,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:35:17,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:35:17,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:35:17,887 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:35:17,887 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:35:17,888 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:35:17,888 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:35:17,888 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:35:17,888 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:35:17,890 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:35:17,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:35:17,890 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:35:17,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:35:17,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:35:17,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:35:17,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:35:17,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:35:17,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:35:17,892 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:35:17,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:35:17,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:35:17,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:35:17,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:35:17,894 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:35:17,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:35:17,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:35:17,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:35:17,895 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:35:17,899 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:35:17,900 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_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c81b642bdc34318660f50d5b284278ba8988a3d4 [2020-11-30 00:35:18,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:35:18,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:35:18,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:35:18,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:35:18,304 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:35:18,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2020-11-30 00:35:18,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/data/e6aeef86f/260963033ebe45ec9b67ed59d75ad5c8/FLAG0c522ffdc [2020-11-30 00:35:18,973 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:35:18,974 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2020-11-30 00:35:18,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/data/e6aeef86f/260963033ebe45ec9b67ed59d75ad5c8/FLAG0c522ffdc [2020-11-30 00:35:19,311 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/data/e6aeef86f/260963033ebe45ec9b67ed59d75ad5c8 [2020-11-30 00:35:19,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:35:19,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:35:19,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:19,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:35:19,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:35:19,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a56b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19, skipping insertion in model container [2020-11-30 00:35:19,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:35:19,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:35:19,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:19,482 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:35:19,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:19,522 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:35:19,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19 WrapperNode [2020-11-30 00:35:19,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:19,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:19,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:35:19,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:35:19,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:19,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:35:19,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:35:19,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:35:19,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... [2020-11-30 00:35:19,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:35:19,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:35:19,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:35:19,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:35:19,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/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 [2020-11-30 00:35:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:35:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:35:19,792 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:35:19,792 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:35:19,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:19 BoogieIcfgContainer [2020-11-30 00:35:19,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:35:19,794 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:35:19,794 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:35:19,797 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:35:19,798 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:35:19,798 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:35:19" (1/3) ... [2020-11-30 00:35:19,800 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d4f9837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:35:19, skipping insertion in model container [2020-11-30 00:35:19,800 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:35:19,800 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:19" (2/3) ... [2020-11-30 00:35:19,801 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d4f9837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:35:19, skipping insertion in model container [2020-11-30 00:35:19,801 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:35:19,801 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:19" (3/3) ... [2020-11-30 00:35:19,802 INFO L373 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv.c [2020-11-30 00:35:19,849 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:35:19,849 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:35:19,849 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:35:19,849 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:35:19,850 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:35:19,850 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:35:19,850 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:35:19,850 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:35:19,862 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-30 00:35:19,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:35:19,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:35:19,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:35:19,885 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:35:19,885 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:35:19,885 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:35:19,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-30 00:35:19,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:35:19,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:35:19,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:35:19,887 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:35:19,888 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:35:19,893 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 3#L16-1true [2020-11-30 00:35:19,893 INFO L796 eck$LassoCheckResult]: Loop: 3#L16-1true assume !!(main_~i~0 > 0 && main_~i~0 < 50); 4#L10true assume main_~i~0 < 20;main_~i~0 := main_~i~0 - 1; 10#L10-2true assume main_~i~0 > 10;main_~i~0 := 1 + main_~i~0; 7#L13-1true assume 30 <= main_~i~0 && main_~i~0 <= 40;main_~i~0 := main_~i~0 - 1; 3#L16-1true [2020-11-30 00:35:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:19,898 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 00:35:19,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:19,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497101208] [2020-11-30 00:35:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:19,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:19,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:19,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:19,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:19,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2020-11-30 00:35:19,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:19,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686843656] [2020-11-30 00:35:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:20,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686843656] [2020-11-30 00:35:20,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:20,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:35:20,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315658865] [2020-11-30 00:35:20,097 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:35:20,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:35:20,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:35:20,115 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-11-30 00:35:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:20,412 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-11-30 00:35:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:35:20,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 25 transitions. [2020-11-30 00:35:20,417 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-11-30 00:35:20,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 12 states and 16 transitions. [2020-11-30 00:35:20,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-30 00:35:20,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-30 00:35:20,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-11-30 00:35:20,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:35:20,425 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-30 00:35:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-11-30 00:35:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 9. [2020-11-30 00:35:20,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-30 00:35:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2020-11-30 00:35:20,454 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-30 00:35:20,454 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-30 00:35:20,454 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:35:20,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2020-11-30 00:35:20,456 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 00:35:20,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:35:20,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:35:20,457 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 00:35:20,457 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:35:20,458 INFO L794 eck$LassoCheckResult]: Stem: 42#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 43#L16-1 [2020-11-30 00:35:20,458 INFO L796 eck$LassoCheckResult]: Loop: 43#L16-1 assume !!(main_~i~0 > 0 && main_~i~0 < 50); 45#L10 assume !(main_~i~0 < 20); 46#L10-2 assume main_~i~0 > 10;main_~i~0 := 1 + main_~i~0; 47#L13-1 assume 30 <= main_~i~0 && main_~i~0 <= 40;main_~i~0 := main_~i~0 - 1; 43#L16-1 [2020-11-30 00:35:20,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:20,459 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-30 00:35:20,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:20,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5337398] [2020-11-30 00:35:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:20,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:20,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:20,481 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:20,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2020-11-30 00:35:20,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:20,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130460861] [2020-11-30 00:35:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:20,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:20,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:20,517 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:20,518 INFO L82 PathProgramCache]: Analyzing trace with hash 29865611, now seen corresponding path program 1 times [2020-11-30 00:35:20,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:20,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719538297] [2020-11-30 00:35:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:20,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:20,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:20,547 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:35:20,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:35:20 BoogieIcfgContainer [2020-11-30 00:35:20,681 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:35:20,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:35:20,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:35:20,682 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:35:20,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:19" (3/4) ... [2020-11-30 00:35:20,685 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:35:20,728 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6b5ac5cd-dbde-4aad-bb73-e75c0e468fc7/bin/uautomizer/witness.graphml [2020-11-30 00:35:20,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:35:20,730 INFO L168 Benchmark]: Toolchain (without parser) took 1410.16 ms. Allocated memory is still 115.3 MB. Free memory was 80.1 MB in the beginning and 46.8 MB in the end (delta: 33.3 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:20,732 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 86.7 MB in the end (delta: 23.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:20,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.06 ms. Allocated memory is still 115.3 MB. Free memory was 80.1 MB in the beginning and 92.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:20,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.05 ms. Allocated memory is still 115.3 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:20,743 INFO L168 Benchmark]: Boogie Preprocessor took 17.75 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 90.2 MB in the end (delta: 687.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:20,744 INFO L168 Benchmark]: RCFGBuilder took 211.57 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 81.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:20,744 INFO L168 Benchmark]: BuchiAutomizer took 887.81 ms. Allocated memory is still 115.3 MB. Free memory was 81.8 MB in the beginning and 48.9 MB in the end (delta: 32.9 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:20,745 INFO L168 Benchmark]: Witness Printer took 46.67 ms. Allocated memory is still 115.3 MB. Free memory was 48.9 MB in the beginning and 46.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:20,747 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 115.3 MB. Free memory was 86.7 MB in the beginning and 86.7 MB in the end (delta: 23.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.06 ms. Allocated memory is still 115.3 MB. Free memory was 80.1 MB in the beginning and 92.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.05 ms. Allocated memory is still 115.3 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.75 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 90.2 MB in the end (delta: 687.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 211.57 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 81.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 887.81 ms. Allocated memory is still 115.3 MB. Free memory was 81.8 MB in the beginning and 48.9 MB in the end (delta: 32.9 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 46.67 ms. Allocated memory is still 115.3 MB. Free memory was 48.9 MB in the beginning and 46.8 MB in the end (delta: 2.1 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 Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 8 SDslu, 6 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI1 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47fa033c=0, \result=0, i=29} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...