./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/sum_20x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/sum_20x0-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 42712a480385f40caa20979fd35763a8ad414af5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:13:30,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:13:30,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:13:30,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:13:30,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:13:30,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:13:30,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:13:30,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:13:30,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:13:30,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:13:30,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:13:31,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:13:31,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:13:31,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:13:31,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:13:31,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:13:31,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:13:31,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:13:31,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:13:31,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:13:31,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:13:31,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:13:31,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:13:31,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:13:31,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:13:31,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:13:31,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:13:31,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:13:31,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:13:31,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:13:31,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:13:31,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:13:31,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:13:31,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:13:31,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:13:31,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:13:31,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:13:31,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:13:31,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:13:31,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:13:31,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:13:31,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:13:31,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:13:31,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:13:31,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:13:31,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:13:31,143 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:13:31,144 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:13:31,144 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:13:31,144 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:13:31,144 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:13:31,145 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:13:31,145 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:13:31,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:13:31,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:13:31,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:13:31,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:13:31,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:13:31,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:13:31,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:13:31,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:13:31,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:13:31,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:13:31,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:13:31,149 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:13:31,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:13:31,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:13:31,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:13:31,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:13:31,150 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:13:31,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:13:31,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:13:31,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:13:31,151 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:13:31,153 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:13:31,153 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_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42712a480385f40caa20979fd35763a8ad414af5 [2020-11-30 01:13:31,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:13:31,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:13:31,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:13:31,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:13:31,563 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:13:31,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2020-11-30 01:13:31,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/data/57dbdb26e/57af0fdc797e4e01bbdf9be641f4e172/FLAGc63a60890 [2020-11-30 01:13:32,318 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:13:32,319 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2020-11-30 01:13:32,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/data/57dbdb26e/57af0fdc797e4e01bbdf9be641f4e172/FLAGc63a60890 [2020-11-30 01:13:32,682 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/bin/uautomizer/data/57dbdb26e/57af0fdc797e4e01bbdf9be641f4e172 [2020-11-30 01:13:32,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:13:32,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:13:32,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:32,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:13:32,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:13:32,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:32" (1/1) ... [2020-11-30 01:13:32,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5340239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:32, skipping insertion in model container [2020-11-30 01:13:32,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:32" (1/1) ... [2020-11-30 01:13:32,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:13:32,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:13:32,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:33,036 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:13:33,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:33,091 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:13:33,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33 WrapperNode [2020-11-30 01:13:33,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:33,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:33,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:13:33,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:13:33,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:33,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:13:33,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:13:33,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:13:33,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:13:33,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:13:33,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:13:33,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:13:33,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 01:13:33,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:13:33,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:13:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-11-30 01:13:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-11-30 01:13:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:13:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:13:33,731 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:13:33,735 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:13:33,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:33 BoogieIcfgContainer [2020-11-30 01:13:33,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:13:33,740 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:13:33,740 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:13:33,744 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:13:33,745 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:33,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:13:32" (1/3) ... [2020-11-30 01:13:33,747 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7502352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:13:33, skipping insertion in model container [2020-11-30 01:13:33,747 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:33,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33" (2/3) ... [2020-11-30 01:13:33,748 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7502352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:13:33, skipping insertion in model container [2020-11-30 01:13:33,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:13:33,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:33" (3/3) ... [2020-11-30 01:13:33,751 INFO L373 chiAutomizerObserver]: Analyzing ICFG sum_20x0-2.c [2020-11-30 01:13:33,832 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:13:33,832 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:13:33,833 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:13:33,833 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:13:33,833 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:13:33,833 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:13:33,833 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:13:33,834 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:13:33,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-30 01:13:33,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:13:33,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:33,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:33,899 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 01:13:33,899 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:13:33,900 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:13:33,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-30 01:13:33,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:13:33,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:13:33,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:13:33,905 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 01:13:33,905 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:13:33,914 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 01:13:33,915 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 01:13:33,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:33,927 INFO L82 PathProgramCache]: Analyzing trace with hash 29878, now seen corresponding path program 1 times [2020-11-30 01:13:33,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:33,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506957221] [2020-11-30 01:13:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:34,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:34,127 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:34,151 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:34,154 INFO L82 PathProgramCache]: Analyzing trace with hash 46806, now seen corresponding path program 1 times [2020-11-30 01:13:34,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:34,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313787055] [2020-11-30 01:13:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:34,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:34,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:34,169 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:34,171 INFO L82 PathProgramCache]: Analyzing trace with hash 890112513, now seen corresponding path program 1 times [2020-11-30 01:13:34,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:34,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243300602] [2020-11-30 01:13:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:34,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:34,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:34,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:34,460 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:13:34,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:13:34,462 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:13:34,462 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:13:34,462 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:13:34,462 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:34,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:13:34,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:13:34,463 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_20x0-2.c_Iteration1_Loop [2020-11-30 01:13:34,463 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:13:34,464 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:13:34,485 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 01:13:34,502 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 01:13:34,508 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 01:13:34,513 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 01:13:34,544 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 01:13:34,561 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 01:13:34,694 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:13:34,701 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 01:13:34,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:13:34,727 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 01:13:34,739 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:13:34,739 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_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 01:13:34,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:13:34,797 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 01:13:34,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:13:34,815 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_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 [2020-11-30 01:13:34,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:13:34,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:13:34,880 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:13:34,880 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_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 [2020-11-30 01:13:34,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:13:34,911 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 [2020-11-30 01:13:34,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:13:34,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:13:35,009 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:13:35,011 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:13:35,011 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:13:35,012 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:13:35,012 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:13:35,012 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:13:35,012 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:13:35,012 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:13:35,012 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:13:35,013 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_20x0-2.c_Iteration1_Loop [2020-11-30 01:13:35,013 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:13:35,013 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:13:35,015 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 01:13:35,033 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 01:13:35,039 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 01:13:35,057 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 01:13:35,075 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 01:13:35,087 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 01:13:35,194 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:13:35,198 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 01:13:35,204 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 01:13:35,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:35,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:35,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:35,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:35,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:35,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:35,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:35,215 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 01:13:35,245 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 01:13:35,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:35,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:35,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:35,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:35,248 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:35,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:35,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:35,257 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 01:13:35,287 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 01:13:35,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:35,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:35,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:35,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:35,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:35,292 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:35,292 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:35,306 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 [2020-11-30 01:13:35,336 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 01:13:35,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:13:35,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:13:35,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:13:35,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:13:35,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:13:35,340 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:13:35,341 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:13:35,348 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:13:35,353 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:13:35,354 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_2de99fb1-1ae2-4d98-86f3-217dad3e1a39/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 [2020-11-30 01:13:35,388 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:13:35,388 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:13:35,388 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:13:35,389 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(sum_#in~n) = 1*sum_#in~n Supporting invariants [] [2020-11-30 01:13:35,429 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:13:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:35,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:13:35,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:35,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:13:35,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:35,626 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 01:13:35,645 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 01:13:35,646 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2020-11-30 01:13:35,854 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 01:13:35,857 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 01:13:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 01:13:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-30 01:13:35,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-30 01:13:35,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:35,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 01:13:35,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:35,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-30 01:13:35,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:13:35,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2020-11-30 01:13:35,873 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:13:35,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-30 01:13:35,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:13:35,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:13:35,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:13:35,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:13:35,879 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:13:35,880 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:13:35,880 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:13:35,880 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:13:35,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:13:35,880 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:13:35,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:13:35,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:13:35 BoogieIcfgContainer [2020-11-30 01:13:35,888 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:13:35,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:13:35,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:13:35,892 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:13:35,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:33" (3/4) ... [2020-11-30 01:13:35,896 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:13:35,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:13:35,902 INFO L168 Benchmark]: Toolchain (without parser) took 3210.33 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 66.5 MB in the beginning and 115.9 MB in the end (delta: -49.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:35,903 INFO L168 Benchmark]: CDTParser took 1.04 ms. Allocated memory is still 96.5 MB. Free memory was 53.2 MB in the beginning and 53.1 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:35,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.04 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 74.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:35,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.91 ms. Allocated memory is still 96.5 MB. Free memory was 74.8 MB in the beginning and 73.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:35,911 INFO L168 Benchmark]: Boogie Preprocessor took 33.57 ms. Allocated memory is still 96.5 MB. Free memory was 73.4 MB in the beginning and 72.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:35,913 INFO L168 Benchmark]: RCFGBuilder took 555.75 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 61.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:35,919 INFO L168 Benchmark]: BuchiAutomizer took 2148.46 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 61.3 MB in the beginning and 116.8 MB in the end (delta: -55.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:35,920 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 142.6 MB. Free memory is still 115.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:35,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04 ms. Allocated memory is still 96.5 MB. Free memory was 53.2 MB in the beginning and 53.1 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.04 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 74.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.91 ms. Allocated memory is still 96.5 MB. Free memory was 74.8 MB in the beginning and 73.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.57 ms. Allocated memory is still 96.5 MB. Free memory was 73.4 MB in the beginning and 72.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 555.75 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 61.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2148.46 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 61.3 MB in the beginning and 116.8 MB in the end (delta: -55.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.42 ms. Allocated memory is still 142.6 MB. Free memory is still 115.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (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 2.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.1s. 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, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf94 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...