./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_03.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_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/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 89ce36fdd9a6142844b72609f6c752ece8563e1f .................................................................................................................................................................................................................................................................................................................................... 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 01:00:12,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:00:12,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:00:12,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:00:12,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:00:12,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:00:12,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:00:12,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:00:12,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:00:12,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:00:12,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:00:12,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:00:12,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:00:12,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:00:12,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:00:12,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:00:12,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:00:12,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:00:12,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:00:12,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:00:12,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:00:12,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:00:12,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:00:12,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:00:12,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:00:12,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:00:12,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:00:12,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:00:12,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:00:12,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:00:12,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:00:12,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:00:12,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:00:12,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:00:12,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:00:12,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:00:12,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:00:12,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:00:12,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:00:12,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:00:12,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:00:12,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 01:00:12,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:00:12,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:00:12,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:00:12,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:00:12,751 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:00:12,751 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:00:12,751 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:00:12,752 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:00:12,752 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:00:12,752 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:00:12,753 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:00:12,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:00:12,754 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:00:12,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:00:12,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:00:12,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:00:12,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:00:12,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:00:12,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:00:12,755 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:00:12,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:00:12,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:00:12,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:00:12,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:00:12,756 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:00:12,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:00:12,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:00:12,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:00:12,757 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:00:12,758 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:00:12,759 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_c4481344-22ac-467b-87a6-e73fef23d2f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89ce36fdd9a6142844b72609f6c752ece8563e1f [2020-11-30 01:00:12,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:00:13,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:00:13,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:00:13,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:00:13,030 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:00:13,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/NO_03.c [2020-11-30 01:00:13,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/data/29bd0a19c/9856eacbe01f4034bb1d61c927d2e16d/FLAGa91ece1f4 [2020-11-30 01:00:13,595 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:00:13,596 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/sv-benchmarks/c/termination-restricted-15/NO_03.c [2020-11-30 01:00:13,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/data/29bd0a19c/9856eacbe01f4034bb1d61c927d2e16d/FLAGa91ece1f4 [2020-11-30 01:00:13,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/data/29bd0a19c/9856eacbe01f4034bb1d61c927d2e16d [2020-11-30 01:00:13,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:00:13,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:00:13,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:00:13,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:00:13,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:00:13,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:00:13" (1/1) ... [2020-11-30 01:00:13,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dee6634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:13, skipping insertion in model container [2020-11-30 01:00:13,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:00:13" (1/1) ... [2020-11-30 01:00:13,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:00:14,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:00:14,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:00:14,195 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:00:14,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:00:14,233 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:00:14,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14 WrapperNode [2020-11-30 01:00:14,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:00:14,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:00:14,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:00:14,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:00:14,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:00:14,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:00:14,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:00:14,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:00:14,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... [2020-11-30 01:00:14,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:00:14,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:00:14,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:00:14,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:00:14,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/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 01:00:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:00:14,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:00:14,508 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:00:14,508 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:00:14,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:00:14 BoogieIcfgContainer [2020-11-30 01:00:14,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:00:14,512 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:00:14,512 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:00:14,516 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:00:14,516 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:00:14,517 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:00:13" (1/3) ... [2020-11-30 01:00:14,518 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@376ee90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:00:14, skipping insertion in model container [2020-11-30 01:00:14,518 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:00:14,518 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:00:14" (2/3) ... [2020-11-30 01:00:14,519 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@376ee90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:00:14, skipping insertion in model container [2020-11-30 01:00:14,519 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:00:14,519 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:00:14" (3/3) ... [2020-11-30 01:00:14,520 INFO L373 chiAutomizerObserver]: Analyzing ICFG NO_03.c [2020-11-30 01:00:14,586 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:00:14,586 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:00:14,586 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:00:14,586 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:00:14,587 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:00:14,587 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:00:14,587 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:00:14,587 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:00:14,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 01:00:14,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:00:14,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:00:14,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:00:14,626 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:00:14,626 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:00:14,626 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:00:14,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 01:00:14,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:00:14,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:00:14,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:00:14,633 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:00:14,633 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:00:14,640 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 8#L10-2true [2020-11-30 01:00:14,640 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 100);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 < 1); 10#L12-3true main_~i~0 := main_~i~0; 8#L10-2true [2020-11-30 01:00:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:00:14,647 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-30 01:00:14,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:00:14,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178673610] [2020-11-30 01:00:14,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:00:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:00:14,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:00:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:00:14,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:00:14,761 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:00:14,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:00:14,767 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-30 01:00:14,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:00:14,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211605429] [2020-11-30 01:00:14,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:00:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:00:14,832 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 01:00:14,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211605429] [2020-11-30 01:00:14,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:00:14,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:00:14,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946262131] [2020-11-30 01:00:14,838 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:00:14,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:00:14,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:00:14,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:00:14,856 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-11-30 01:00:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:00:14,880 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-11-30 01:00:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:00:14,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-11-30 01:00:14,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:00:14,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2020-11-30 01:00:14,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-30 01:00:14,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-30 01:00:14,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2020-11-30 01:00:14,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:00:14,889 INFO L691 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-11-30 01:00:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2020-11-30 01:00:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2020-11-30 01:00:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 01:00:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2020-11-30 01:00:14,915 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-11-30 01:00:14,915 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-11-30 01:00:14,915 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:00:14,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2020-11-30 01:00:14,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 01:00:14,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:00:14,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:00:14,916 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-30 01:00:14,917 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 01:00:14,917 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 29#L10-2 [2020-11-30 01:00:14,917 INFO L796 eck$LassoCheckResult]: Loop: 29#L10-2 assume !!(main_~i~0 < 100);main_~j~0 := 0; 26#L12-2 assume !!(main_~j~0 < 1);main_~j~0 := 1 + main_~j~0; 27#L12-2 assume !(main_~j~0 < 1); 30#L12-3 main_~i~0 := main_~i~0; 29#L10-2 [2020-11-30 01:00:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:00:14,918 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-30 01:00:14,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:00:14,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545251092] [2020-11-30 01:00:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:00:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:00:14,923 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:00:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:00:14,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:00:14,926 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:00:14,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:00:14,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2020-11-30 01:00:14,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:00:14,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278053673] [2020-11-30 01:00:14,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:00:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:00:14,942 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:00:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:00:14,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:00:14,959 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:00:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:00:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2020-11-30 01:00:14,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:00:14,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128997841] [2020-11-30 01:00:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:00:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:00:14,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:00:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:00:14,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:00:14,988 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:00:15,134 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-11-30 01:00:15,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:00:15 BoogieIcfgContainer [2020-11-30 01:00:15,228 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:00:15,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:00:15,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:00:15,229 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:00:15,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:00:14" (3/4) ... [2020-11-30 01:00:15,232 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 01:00:15,279 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c4481344-22ac-467b-87a6-e73fef23d2f6/bin/uautomizer/witness.graphml [2020-11-30 01:00:15,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:00:15,283 INFO L168 Benchmark]: Toolchain (without parser) took 1309.85 ms. Allocated memory is still 109.1 MB. Free memory was 78.4 MB in the beginning and 48.4 MB in the end (delta: 30.0 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:15,283 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory was 37.2 MB in the beginning and 37.2 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:00:15,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.81 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 88.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:15,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.54 ms. Allocated memory is still 109.1 MB. Free memory was 88.5 MB in the beginning and 87.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:00:15,293 INFO L168 Benchmark]: Boogie Preprocessor took 21.14 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 86.5 MB in the end (delta: 583.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:00:15,296 INFO L168 Benchmark]: RCFGBuilder took 220.65 ms. Allocated memory is still 109.1 MB. Free memory was 86.2 MB in the beginning and 78.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:15,296 INFO L168 Benchmark]: BuchiAutomizer took 716.40 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 49.9 MB in the end (delta: 28.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:15,297 INFO L168 Benchmark]: Witness Printer took 51.99 ms. Allocated memory is still 109.1 MB. Free memory was 49.9 MB in the beginning and 48.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:00:15,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 75.5 MB. Free memory was 37.2 MB in the beginning and 37.2 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.81 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 88.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.54 ms. Allocated memory is still 109.1 MB. Free memory was 88.5 MB in the beginning and 87.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.14 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 86.5 MB in the end (delta: 583.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 220.65 ms. Allocated memory is still 109.1 MB. Free memory was 86.2 MB in the beginning and 78.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 716.40 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 49.9 MB in the end (delta: 28.2 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 51.99 ms. Allocated memory is still 109.1 MB. Free memory was 49.9 MB in the beginning and 48.4 MB in the end (delta: 1.5 MB). There was no memory consumed. 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 3 locations. The remainder module has 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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: 10]: 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, j=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] i = 0 Loop: [L10] COND TRUE i < 100 [L11] j = 0 [L12] COND TRUE j < 1 [L13] j = j+1 [L12] COND FALSE !(j < 1) [L15] i = i+0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...