./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/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 32bit --witnessprinter.graph.data.programhash 62383dd39c4465d1f3b7424ac172d9121521b446 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:20,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:20,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:20,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:20,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:20,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:20,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:20,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:20,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:20,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:20,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:20,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:20,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:20,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:20,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:20,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:20,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:20,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:20,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:20,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:20,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:20,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:20,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:20,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:20,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:20,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:20,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:20,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:20,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:20,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:20,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:20,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:20,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:20,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:20,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:20,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:20,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:20,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:20,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:20,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:20,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:20,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 02:56:20,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:20,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:20,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:20,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:20,787 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:20,787 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:56:20,788 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:56:20,788 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:56:20,788 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:56:20,788 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:56:20,788 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:56:20,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:20,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:20,789 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:20,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:20,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:20,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:20,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:56:20,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:56:20,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:56:20,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:20,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:20,791 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:56:20,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:20,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:56:20,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:20,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:20,792 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:56:20,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:20,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:20,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:20,793 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:56:20,794 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:56:20,794 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_7e649a8f-1d83-4e3b-8d93-49018f767e5a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62383dd39c4465d1f3b7424ac172d9121521b446 [2020-11-28 02:56:21,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:21,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:21,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:21,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:21,060 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:21,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c [2020-11-28 02:56:21,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/data/80062f9ef/009109caaa464579bb0b0b1901918b19/FLAG9612e2168 [2020-11-28 02:56:21,630 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:21,630 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/sv-benchmarks/c/recursive-simple/sum_10x0-2.c [2020-11-28 02:56:21,638 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/data/80062f9ef/009109caaa464579bb0b0b1901918b19/FLAG9612e2168 [2020-11-28 02:56:21,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/data/80062f9ef/009109caaa464579bb0b0b1901918b19 [2020-11-28 02:56:22,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:22,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:22,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:22,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:22,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:21" (1/1) ... [2020-11-28 02:56:22,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209b15cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:21" (1/1) ... [2020-11-28 02:56:22,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:22,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:22,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,243 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:22,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,277 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:22,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22 WrapperNode [2020-11-28 02:56:22,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:22,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:22,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:22,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:22,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:22,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:22,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:22,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/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 [2020-11-28 02:56:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-11-28 02:56:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-11-28 02:56:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:22,671 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:22,671 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 02:56:22,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22 BoogieIcfgContainer [2020-11-28 02:56:22,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:22,674 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:56:22,674 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:56:22,677 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:56:22,678 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,678 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:21" (1/3) ... [2020-11-28 02:56:22,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4837fcb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (2/3) ... [2020-11-28 02:56:22,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4837fcb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/3) ... [2020-11-28 02:56:22,682 INFO L373 chiAutomizerObserver]: Analyzing ICFG sum_10x0-2.c [2020-11-28 02:56:22,726 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:56:22,727 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:56:22,727 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:56:22,727 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:22,727 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:22,727 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:56:22,727 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:22,727 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:56:22,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-28 02:56:22,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 02:56:22,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:22,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:22,768 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 02:56:22,768 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:56:22,768 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:56:22,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-28 02:56:22,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 02:56:22,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:22,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:22,771 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 02:56:22,771 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:56:22,779 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 9#L-1true havoc main_#res;havoc main_#t~ret8, main_~a~0, main_~b~0, main_~result~0;main_~a~0 := 10;main_~b~0 := 0; 5#L16true call main_#t~ret8 := sum(main_~a~0, main_~b~0);< 10#sumENTRYtrue [2020-11-28 02:56:22,779 INFO L796 eck$LassoCheckResult]: Loop: 10#sumENTRYtrue ~n := #in~n;~m := #in~m; 4#L6true assume !(~n <= 0); 12#L9true call #t~ret7 := sum(~n - 1, 1 + ~m);< 10#sumENTRYtrue [2020-11-28 02:56:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash 29878, now seen corresponding path program 1 times [2020-11-28 02:56:22,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:22,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690413911] [2020-11-28 02:56:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:22,909 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:22,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:22,949 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:22,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:22,951 INFO L82 PathProgramCache]: Analyzing trace with hash 46806, now seen corresponding path program 1 times [2020-11-28 02:56:22,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:22,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367640075] [2020-11-28 02:56:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:22,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:22,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:22,978 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash 890112513, now seen corresponding path program 1 times [2020-11-28 02:56:22,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:22,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669744055] [2020-11-28 02:56:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,029 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,214 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:23,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:23,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:23,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:23,216 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:56:23,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:23,217 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:23,217 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_10x0-2.c_Iteration1_Loop [2020-11-28 02:56:23,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:23,217 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:23,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,381 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:23,382 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:23,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:56:23,389 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,396 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:56:23,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {sum_#t~ret7=0} Honda state: {sum_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:56:23,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:56:23,432 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:56:23,432 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {sum_#res=0} Honda state: {sum_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:23,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:56:23,474 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,477 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:56:23,478 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {sum_~m=0} Honda state: {sum_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:56:23,523 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:56:23,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:56:23,605 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:56:23,606 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:23,606 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:23,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:23,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:23,607 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:23,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,607 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:23,607 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:23,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_10x0-2.c_Iteration1_Loop [2020-11-28 02:56:23,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:23,607 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:23,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,723 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:23,728 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:23,734 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:23,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:23,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:23,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:23,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:23,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:23,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:23,742 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,746 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:23,790 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:23,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:23,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:23,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:23,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:23,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:23,793 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:23,793 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,802 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:23,849 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:23,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:23,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:23,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:23,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:23,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:23,854 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:23,854 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,856 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:23,897 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:23,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:23,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:23,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:23,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:23,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:23,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:23,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,905 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:23,910 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:56:23,910 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e649a8f-1d83-4e3b-8d93-49018f767e5a/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:23,918 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:56:23,918 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:56:23,919 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:23,919 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(sum_#in~n) = 1*sum_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,950 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:56:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:24,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:24,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:24,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:56:24,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:24,113 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 02:56:24,114 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2020-11-28 02:56:24,242 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 4 states. Result 31 states and 36 transitions. Complement of second has 12 states. [2020-11-28 02:56:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 02:56:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-28 02:56:24,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-28 02:56:24,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:24,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 02:56:24,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:24,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-28 02:56:24,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:24,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2020-11-28 02:56:24,257 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:24,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-28 02:56:24,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:56:24,260 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:56:24,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:56:24,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:24,262 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:24,262 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:24,262 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:24,262 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:56:24,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:24,262 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:24,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:56:24,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:24 BoogieIcfgContainer [2020-11-28 02:56:24,266 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:56:24,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:24,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:24,267 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:24,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/4) ... [2020-11-28 02:56:24,269 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:56:24,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:24,271 INFO L168 Benchmark]: Toolchain (without parser) took 2268.42 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 75.1 MB in the beginning and 93.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,272 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory was 58.8 MB in the beginning and 58.7 MB in the end (delta: 41.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:24,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.20 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 80.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.36 ms. Allocated memory is still 102.8 MB. Free memory was 80.9 MB in the beginning and 79.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:24,274 INFO L168 Benchmark]: Boogie Preprocessor took 30.71 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.7 MB in the end (delta: 794.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,275 INFO L168 Benchmark]: RCFGBuilder took 318.97 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 67.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,275 INFO L168 Benchmark]: BuchiAutomizer took 1592.56 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 94.2 MB in the end (delta: -26.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:24,276 INFO L168 Benchmark]: Witness Printer took 3.20 ms. Allocated memory is still 127.9 MB. Free memory was 94.2 MB in the beginning and 93.5 MB in the end (delta: 714.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:24,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory was 58.8 MB in the beginning and 58.7 MB in the end (delta: 41.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.20 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 80.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.36 ms. Allocated memory is still 102.8 MB. Free memory was 80.9 MB in the beginning and 79.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.71 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.7 MB in the end (delta: 794.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 318.97 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 67.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1592.56 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 94.2 MB in the end (delta: -26.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.20 ms. Allocated memory is still 127.9 MB. Free memory was 94.2 MB in the beginning and 93.5 MB in the end (delta: 714.7 kB). 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 (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 8 SDslu, 2 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf94 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...