./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/sum_20x0-1.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_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/sum_20x0-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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 d709c141e865b9e316ae50970f4a7a44b0dfd8eb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:12:53,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:12:53,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:12:53,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:12:53,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:12:53,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:12:53,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:12:53,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:12:53,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:12:53,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:12:53,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:12:53,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:12:53,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:12:53,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:12:53,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:12:53,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:12:53,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:12:53,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:12:53,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:12:53,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:12:53,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:12:53,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:12:53,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:12:53,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:12:53,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:12:53,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:12:53,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:12:53,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:12:53,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:12:53,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:12:53,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:12:53,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:12:53,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:12:53,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:12:53,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:12:53,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:12:53,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:12:53,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:12:53,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:12:53,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:12:53,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:12:53,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:12:53,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:12:53,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:12:53,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:12:53,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:12:53,873 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:12:53,874 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:12:53,874 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:12:53,874 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:12:53,875 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:12:53,875 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:12:53,876 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:12:53,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:12:53,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:12:53,877 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:12:53,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:12:53,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:12:53,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:12:53,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:12:53,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:12:53,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:12:53,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:12:53,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:12:53,880 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:12:53,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:12:53,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:12:53,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:12:53,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:12:53,882 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:12:53,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:12:53,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:12:53,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:12:53,883 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:12:53,885 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:12:53,885 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_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d709c141e865b9e316ae50970f4a7a44b0dfd8eb [2020-11-30 01:12:54,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:12:54,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:12:54,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:12:54,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:12:54,222 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:12:54,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2020-11-30 01:12:54,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/data/1c83907c4/c15cd9c6e9d14ce5b6142b4dcba75686/FLAG8115705b7 [2020-11-30 01:12:54,883 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:12:54,884 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2020-11-30 01:12:54,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/data/1c83907c4/c15cd9c6e9d14ce5b6142b4dcba75686/FLAG8115705b7 [2020-11-30 01:12:55,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/data/1c83907c4/c15cd9c6e9d14ce5b6142b4dcba75686 [2020-11-30 01:12:55,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:12:55,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:12:55,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:55,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:12:55,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:12:55,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601bd394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55, skipping insertion in model container [2020-11-30 01:12:55,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:12:55,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:12:55,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:55,532 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:12:55,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:55,567 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:12:55,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55 WrapperNode [2020-11-30 01:12:55,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:55,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:55,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:12:55,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:12:55,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:55,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:12:55,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:12:55,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:12:55,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... [2020-11-30 01:12:55,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:12:55,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:12:55,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:12:55,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:12:55,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:12:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:12:55,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:12:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-11-30 01:12:55,752 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-11-30 01:12:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:12:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:12:56,095 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:12:56,096 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:12:56,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:56 BoogieIcfgContainer [2020-11-30 01:12:56,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:12:56,099 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:12:56,099 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:12:56,103 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:12:56,104 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:12:56,105 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:12:55" (1/3) ... [2020-11-30 01:12:56,106 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27baddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:12:56, skipping insertion in model container [2020-11-30 01:12:56,107 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:12:56,107 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:55" (2/3) ... [2020-11-30 01:12:56,107 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27baddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:12:56, skipping insertion in model container [2020-11-30 01:12:56,107 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:12:56,108 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:56" (3/3) ... [2020-11-30 01:12:56,109 INFO L373 chiAutomizerObserver]: Analyzing ICFG sum_20x0-1.c [2020-11-30 01:12:56,167 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:12:56,167 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:12:56,167 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:12:56,167 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:12:56,168 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:12:56,168 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:12:56,168 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:12:56,168 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:12:56,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-30 01:12:56,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:12:56,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:12:56,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:12:56,235 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 01:12:56,235 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:12:56,236 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:12:56,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-30 01:12:56,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:12:56,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:12:56,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:12:56,240 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 01:12:56,240 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:12:56,248 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 := 20;main_~b~0 := 0; 5#L16true call main_#t~ret8 := sum(main_~a~0, main_~b~0);< 10#sumENTRYtrue [2020-11-30 01:12:56,248 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 [2020-11-30 01:12:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:56,256 INFO L82 PathProgramCache]: Analyzing trace with hash 29878, now seen corresponding path program 1 times [2020-11-30 01:12:56,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:56,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392970929] [2020-11-30 01:12:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:56,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:56,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:56,437 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:12:56,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:56,440 INFO L82 PathProgramCache]: Analyzing trace with hash 46806, now seen corresponding path program 1 times [2020-11-30 01:12:56,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:56,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121346538] [2020-11-30 01:12:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:56,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:56,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:56,456 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:12:56,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:56,458 INFO L82 PathProgramCache]: Analyzing trace with hash 890112513, now seen corresponding path program 1 times [2020-11-30 01:12:56,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:56,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962560422] [2020-11-30 01:12:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:56,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:56,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:56,515 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:12:56,741 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:12:56,742 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:12:56,742 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:12:56,742 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:12:56,742 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:12:56,743 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:12:56,743 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:12:56,743 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:12:56,743 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_20x0-1.c_Iteration1_Loop [2020-11-30 01:12:56,744 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:12:56,744 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:12:56,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:56,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:56,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:56,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:56,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:56,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:56,915 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:12:56,917 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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) [2020-11-30 01:12:56,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:12:56,935 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 [2020-11-30 01:12:56,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:12:56,954 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_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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) [2020-11-30 01:12:57,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:12:57,039 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:12:57,044 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:12:57,044 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_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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) [2020-11-30 01:12:57,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:12:57,097 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 [2020-11-30 01:12:57,103 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:12:57,103 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_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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) [2020-11-30 01:12:57,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:12:57,154 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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) [2020-11-30 01:12:57,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:12:57,214 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:12:57,300 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:12:57,303 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:12:57,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:12:57,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:12:57,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:12:57,304 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:12:57,304 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:12:57,304 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:12:57,304 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:12:57,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_20x0-1.c_Iteration1_Loop [2020-11-30 01:12:57,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:12:57,305 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:12:57,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:57,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:57,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:57,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:57,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:57,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:12:57,451 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:12:57,457 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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 [2020-11-30 01:12:57,466 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 [2020-11-30 01:12:57,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:12:57,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:12:57,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:12:57,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:12:57,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:12:57,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:12:57,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:12:57,476 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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 [2020-11-30 01:12:57,516 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 [2020-11-30 01:12:57,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:12:57,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:12:57,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:12:57,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:12:57,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:12:57,520 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:12:57,520 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:12:57,529 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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 [2020-11-30 01:12:57,566 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 [2020-11-30 01:12:57,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:12:57,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:12:57,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:12:57,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:12:57,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:12:57,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:12:57,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:12:57,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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) [2020-11-30 01:12:57,628 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 [2020-11-30 01:12:57,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:12:57,631 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:12:57,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:12:57,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:12:57,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:12:57,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:12:57,633 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 [2020-11-30 01:12:57,637 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:12:57,643 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:12:57,643 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_5d9c0f55-235b-46d0-a013-782d0dfc97b8/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) [2020-11-30 01:12:57,653 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:12:57,653 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:12:57,653 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:12:57,654 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 [2020-11-30 01:12:57,686 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:12:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:57,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:12:57,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:57,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:12:57,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:57,952 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 [2020-11-30 01:12:57,954 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2020-11-30 01:12:58,078 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. [2020-11-30 01:12:58,079 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 [2020-11-30 01:12:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 01:12:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-30 01:12:58,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-30 01:12:58,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:12:58,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 01:12:58,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:12:58,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-30 01:12:58,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:12:58,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2020-11-30 01:12:58,089 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:12:58,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-30 01:12:58,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:12:58,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:12:58,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:12:58,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:12:58,093 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:12:58,093 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:12:58,093 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:12:58,093 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:12:58,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:12:58,094 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:12:58,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:12:58,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:12:58 BoogieIcfgContainer [2020-11-30 01:12:58,100 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:12:58,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:12:58,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:12:58,101 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:12:58,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:56" (3/4) ... [2020-11-30 01:12:58,108 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:12:58,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:12:58,114 INFO L168 Benchmark]: Toolchain (without parser) took 2867.88 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 78.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:58,115 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 86.0 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:58,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.54 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 97.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:58,119 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.70 ms. Allocated memory is still 119.5 MB. Free memory was 97.3 MB in the beginning and 96.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:58,125 INFO L168 Benchmark]: Boogie Preprocessor took 38.54 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.2 MB in the end (delta: 817.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:58,126 INFO L168 Benchmark]: RCFGBuilder took 443.34 ms. Allocated memory is still 119.5 MB. Free memory was 95.2 MB in the beginning and 84.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:58,128 INFO L168 Benchmark]: BuchiAutomizer took 2001.09 ms. Allocated memory is still 119.5 MB. Free memory was 84.1 MB in the beginning and 78.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:58,134 INFO L168 Benchmark]: Witness Printer took 7.52 ms. Allocated memory is still 119.5 MB. Free memory was 78.9 MB in the beginning and 78.3 MB in the end (delta: 654.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:58,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 86.0 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.54 ms. Allocated memory is still 119.5 MB. Free memory was 92.7 MB in the beginning and 97.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.70 ms. Allocated memory is still 119.5 MB. Free memory was 97.3 MB in the beginning and 96.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.54 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.2 MB in the end (delta: 817.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 443.34 ms. Allocated memory is still 119.5 MB. Free memory was 95.2 MB in the beginning and 84.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2001.09 ms. Allocated memory is still 119.5 MB. Free memory was 84.1 MB in the beginning and 78.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Witness Printer took 7.52 ms. Allocated memory is still 119.5 MB. Free memory was 78.9 MB in the beginning and 78.3 MB in the end (delta: 654.9 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 1.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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: 17ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...