./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.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_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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 266436f0336fa87343e9fe2aac074f47fa1a621a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:19:50,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:19:50,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:19:50,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:19:50,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:19:50,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:19:50,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:19:50,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:19:50,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:19:50,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:19:50,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:19:50,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:19:50,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:19:50,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:19:50,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:19:50,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:19:50,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:19:50,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:19:50,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:19:50,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:19:50,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:19:50,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:19:50,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:19:50,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:19:50,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:19:50,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:19:50,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:19:50,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:19:50,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:19:50,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:19:50,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:19:50,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:19:50,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:19:50,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:19:50,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:19:50,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:19:50,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:19:50,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:19:50,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:19:50,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:19:50,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:19:50,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:19:50,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:19:50,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:19:50,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:19:50,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:19:50,759 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:19:50,759 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:19:50,759 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:19:50,760 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:19:50,771 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:19:50,771 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:19:50,772 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:19:50,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:19:50,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:19:50,772 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:19:50,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:19:50,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:19:50,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:19:50,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:19:50,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:19:50,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:19:50,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:19:50,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:19:50,774 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:19:50,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:19:50,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:19:50,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:19:50,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:19:50,776 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:19:50,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:19:50,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:19:50,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:19:50,777 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:19:50,778 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:19:50,778 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_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 266436f0336fa87343e9fe2aac074f47fa1a621a [2020-11-29 23:19:51,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:19:51,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:19:51,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:19:51,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:19:51,149 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:19:51,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2020-11-29 23:19:51,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/data/47f01055a/e7292040989848e9835f43bdcb987d3f/FLAGf239b5471 [2020-11-29 23:19:51,775 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:19:51,775 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2020-11-29 23:19:51,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/data/47f01055a/e7292040989848e9835f43bdcb987d3f/FLAGf239b5471 [2020-11-29 23:19:52,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/data/47f01055a/e7292040989848e9835f43bdcb987d3f [2020-11-29 23:19:52,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:19:52,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:19:52,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:19:52,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:19:52,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:19:52,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4261bc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52, skipping insertion in model container [2020-11-29 23:19:52,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:19:52,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:19:52,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:19:52,409 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:19:52,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:19:52,450 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:19:52,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52 WrapperNode [2020-11-29 23:19:52,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:19:52,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:19:52,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:19:52,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:19:52,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:19:52,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:19:52,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:19:52,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:19:52,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... [2020-11-29 23:19:52,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:19:52,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:19:52,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:19:52,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:19:52,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:19:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-11-29 23:19:52,671 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-11-29 23:19:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:19:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-11-29 23:19:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-11-29 23:19:52,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:19:52,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:19:52,971 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:19:52,971 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 23:19:52,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:52 BoogieIcfgContainer [2020-11-29 23:19:52,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:19:52,975 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:19:52,975 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:19:52,991 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:19:52,993 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:19:52,993 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:19:52" (1/3) ... [2020-11-29 23:19:52,998 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@335d33e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:19:52, skipping insertion in model container [2020-11-29 23:19:53,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:19:53,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:52" (2/3) ... [2020-11-29 23:19:53,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@335d33e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:19:53, skipping insertion in model container [2020-11-29 23:19:53,015 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:19:53,016 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:52" (3/3) ... [2020-11-29 23:19:53,017 INFO L373 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_2-1.c [2020-11-29 23:19:53,077 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:19:53,077 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:19:53,078 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:19:53,078 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:19:53,078 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:19:53,078 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:19:53,078 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:19:53,078 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:19:53,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-11-29 23:19:53,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-29 23:19:53,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:19:53,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:19:53,145 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 23:19:53,146 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:53,146 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:19:53,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-11-29 23:19:53,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-29 23:19:53,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:19:53,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:19:53,159 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 23:19:53,159 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:53,168 INFO L794 eck$LassoCheckResult]: Stem: 26#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 2; 22#L39true call main_#t~ret11 := fibo1(main_~x~0);< 27#fibo1ENTRYtrue [2020-11-29 23:19:53,169 INFO L796 eck$LassoCheckResult]: Loop: 27#fibo1ENTRYtrue ~n := #in~n; 4#L10true assume !(~n < 1); 10#L12true assume !(1 == ~n); 13#L15true call #t~ret7 := fibo2(~n - 1);< 15#fibo2ENTRYtrue ~n := #in~n; 28#L20true assume !(~n < 1); 20#L22true assume !(1 == ~n); 9#L25true call #t~ret9 := fibo1(~n - 1);< 27#fibo1ENTRYtrue [2020-11-29 23:19:53,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:53,186 INFO L82 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2020-11-29 23:19:53,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:53,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045432347] [2020-11-29 23:19:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:53,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:53,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:53,430 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:19:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:53,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2020-11-29 23:19:53,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:53,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832091435] [2020-11-29 23:19:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:53,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:53,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:53,487 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:19:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:53,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2020-11-29 23:19:53,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:53,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965758269] [2020-11-29 23:19:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:53,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965758269] [2020-11-29 23:19:53,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:19:53,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 23:19:53,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520255226] [2020-11-29 23:19:54,060 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:19:54,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:19:54,064 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:19:54,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:19:54,065 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:19:54,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:19:54,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:19:54,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-1.c_Iteration1_Loop [2020-11-29 23:19:54,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:19:54,067 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:19:54,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,310 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:19:54,311 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:19:54,334 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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 [2020-11-29 23:19:54,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:19:54,367 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,396 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:19:54,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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 [2020-11-29 23:19:54,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,440 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:19:54,441 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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 [2020-11-29 23:19:54,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:19:54,489 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,522 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:19:54,522 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,550 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:19:54,550 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,580 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:19:54,580 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:19:54,606 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:19:54,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:19:54,719 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:19:54,722 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:19:54,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:19:54,722 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:19:54,722 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:19:54,722 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:19:54,722 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,722 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:19:54,722 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:19:54,722 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-1.c_Iteration1_Loop [2020-11-29 23:19:54,723 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:19:54,723 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:19:54,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:19:54,904 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:19:54,912 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:19:54,917 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 [2020-11-29 23:19:54,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:54,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:54,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:54,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:54,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:54,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:54,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,929 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:54,970 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 [2020-11-29 23:19:54,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:54,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:54,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:54,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:54,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:54,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:54,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:19:54,976 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:19:55,021 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 [2020-11-29 23:19:55,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:55,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:55,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:55,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:55,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:55,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:55,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:55,026 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:19:55,075 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 [2020-11-29 23:19:55,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:55,077 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:55,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:55,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:55,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:55,078 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:55,079 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:55,081 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:19:55,126 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 [2020-11-29 23:19:55,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:55,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:55,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:55,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:55,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:55,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:55,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:55,135 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:19:55,183 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 [2020-11-29 23:19:55,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:55,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:55,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:55,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:55,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:55,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:55,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:55,189 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:55,223 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 [2020-11-29 23:19:55,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:55,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:55,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:55,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:55,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:55,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:55,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:19:55,228 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:55,253 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 [2020-11-29 23:19:55,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:55,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:55,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:55,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:55,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:55,256 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:55,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:19:55,257 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:55,283 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 [2020-11-29 23:19:55,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:19:55,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:19:55,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:19:55,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:19:55,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:19:55,287 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:19:55,287 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:19:55,290 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:19:55,304 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 23:19:55,304 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_210f6f9e-be00-4f53-b0c0-8f5f204366d8/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:19:55,308 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:19:55,308 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:19:55,308 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:19:55,309 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2020-11-29 23:19:55,358 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:19:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:55,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:19:55,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:19:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:55,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:19:55,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:19:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:55,717 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-29 23:19:55,718 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states. Second operand 6 states. [2020-11-29 23:19:56,024 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states.. Second operand 6 states. Result 85 states and 117 transitions. Complement of second has 24 states. [2020-11-29 23:19:56,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-29 23:19:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 23:19:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2020-11-29 23:19:56,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2020-11-29 23:19:56,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:19:56,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-29 23:19:56,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:19:56,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2020-11-29 23:19:56,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:19:56,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2020-11-29 23:19:56,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-29 23:19:56,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2020-11-29 23:19:56,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-11-29 23:19:56,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2020-11-29 23:19:56,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2020-11-29 23:19:56,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:19:56,058 INFO L691 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2020-11-29 23:19:56,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2020-11-29 23:19:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-11-29 23:19:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 23:19:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2020-11-29 23:19:56,087 INFO L714 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-11-29 23:19:56,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:56,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:19:56,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:19:56,092 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand 8 states. [2020-11-29 23:19:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:56,222 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-29 23:19:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:19:56,223 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 18 transitions. [2020-11-29 23:19:56,224 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:19:56,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2020-11-29 23:19:56,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:19:56,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:19:56,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:19:56,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:19:56,225 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:19:56,225 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:19:56,225 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:19:56,225 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:19:56,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:19:56,225 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:19:56,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:19:56,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:19:56 BoogieIcfgContainer [2020-11-29 23:19:56,231 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:19:56,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:19:56,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:19:56,231 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:19:56,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:52" (3/4) ... [2020-11-29 23:19:56,237 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:19:56,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:19:56,240 INFO L168 Benchmark]: Toolchain (without parser) took 4084.10 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 72.6 MB in the beginning and 60.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:56,242 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 40.7 MB in the beginning and 40.7 MB in the end (delta: 46.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:19:56,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.04 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 78.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:56,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.08 ms. Allocated memory is still 100.7 MB. Free memory was 78.5 MB in the beginning and 77.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:19:56,252 INFO L168 Benchmark]: Boogie Preprocessor took 55.57 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:56,252 INFO L168 Benchmark]: RCFGBuilder took 409.79 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 63.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:56,254 INFO L168 Benchmark]: BuchiAutomizer took 3255.93 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 63.8 MB in the beginning and 60.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:56,255 INFO L168 Benchmark]: Witness Printer took 6.48 ms. Allocated memory is still 121.6 MB. Free memory is still 60.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:19:56,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 40.7 MB in the beginning and 40.7 MB in the end (delta: 46.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.04 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 78.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.08 ms. Allocated memory is still 100.7 MB. Free memory was 78.5 MB in the beginning and 77.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.57 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 409.79 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 63.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3255.93 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 63.8 MB in the beginning and 60.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.48 ms. Allocated memory is still 121.6 MB. Free memory is still 60.6 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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: 16 SDtfs, 41 SDslu, 38 SDs, 0 SdLazy, 122 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf78 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq177 hnf96 smp51 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 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...