./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3df7720ba3b76dcfdecddff77e2f89a40d99e447 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-31 01:15:50,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 01:15:50,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 01:15:50,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 01:15:50,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 01:15:50,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 01:15:50,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 01:15:50,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 01:15:50,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 01:15:50,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 01:15:50,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 01:15:50,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 01:15:50,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 01:15:50,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 01:15:50,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 01:15:50,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 01:15:50,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 01:15:50,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 01:15:50,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 01:15:50,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 01:15:50,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 01:15:50,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 01:15:50,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 01:15:50,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 01:15:50,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 01:15:50,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 01:15:50,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 01:15:50,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 01:15:50,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 01:15:50,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 01:15:50,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 01:15:50,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 01:15:50,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 01:15:50,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 01:15:50,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 01:15:50,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 01:15:50,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 01:15:50,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 01:15:50,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 01:15:50,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 01:15:50,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 01:15:50,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-31 01:15:50,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 01:15:50,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 01:15:50,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 01:15:50,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 01:15:50,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 01:15:50,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 01:15:50,328 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 01:15:50,328 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 01:15:50,328 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 01:15:50,328 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 01:15:50,329 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 01:15:50,329 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 01:15:50,329 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 01:15:50,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 01:15:50,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 01:15:50,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 01:15:50,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 01:15:50,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 01:15:50,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 01:15:50,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 01:15:50,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 01:15:50,331 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 01:15:50,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 01:15:50,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 01:15:50,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 01:15:50,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 01:15:50,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 01:15:50,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 01:15:50,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 01:15:50,334 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 01:15:50,334 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df7720ba3b76dcfdecddff77e2f89a40d99e447 [2021-08-31 01:15:50,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 01:15:50,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 01:15:50,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 01:15:50,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 01:15:50,684 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 01:15:50,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2021-08-31 01:15:50,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091e4ad41/ef85a1a13f1243a1afb5f3afd3a11bab/FLAGf3a4bab3f [2021-08-31 01:15:51,132 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 01:15:51,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2021-08-31 01:15:51,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091e4ad41/ef85a1a13f1243a1afb5f3afd3a11bab/FLAGf3a4bab3f [2021-08-31 01:15:51,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091e4ad41/ef85a1a13f1243a1afb5f3afd3a11bab [2021-08-31 01:15:51,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 01:15:51,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 01:15:51,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 01:15:51,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 01:15:51,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 01:15:51,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb12a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51, skipping insertion in model container [2021-08-31 01:15:51,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 01:15:51,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 01:15:51,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:15:51,671 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 01:15:51,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:15:51,693 INFO L208 MainTranslator]: Completed translation [2021-08-31 01:15:51,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51 WrapperNode [2021-08-31 01:15:51,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 01:15:51,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 01:15:51,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 01:15:51,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 01:15:51,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 01:15:51,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 01:15:51,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 01:15:51,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 01:15:51,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 01:15:51,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 01:15:51,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 01:15:51,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 01:15:51,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (1/1) ... [2021-08-31 01:15:51,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:51,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:51,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-31 01:15:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2021-08-31 01:15:51,844 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2021-08-31 01:15:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 01:15:51,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 01:15:51,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 01:15:51,954 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-31 01:15:51,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:15:51 BoogieIcfgContainer [2021-08-31 01:15:51,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 01:15:51,958 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 01:15:51,958 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 01:15:51,961 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 01:15:51,961 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:15:51,961 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 01:15:51" (1/3) ... [2021-08-31 01:15:51,962 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aceca3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:15:51, skipping insertion in model container [2021-08-31 01:15:51,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:15:51,963 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:15:51" (2/3) ... [2021-08-31 01:15:51,963 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aceca3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:15:51, skipping insertion in model container [2021-08-31 01:15:51,963 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:15:51,963 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:15:51" (3/3) ... [2021-08-31 01:15:51,965 INFO L389 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication-1.c [2021-08-31 01:15:52,012 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 01:15:52,013 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 01:15:52,013 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 01:15:52,013 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 01:15:52,013 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 01:15:52,013 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 01:15:52,013 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 01:15:52,013 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 01:15:52,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-31 01:15:52,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:15:52,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:15:52,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:15:52,056 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-31 01:15:52,056 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:15:52,056 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 01:15:52,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-31 01:15:52,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:15:52,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:15:52,060 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:15:52,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-31 01:15:52,060 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:15:52,067 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 12#L26true assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 6#L27true assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 15#L28true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 8#multENTRYtrue [2021-08-31 01:15:52,068 INFO L793 eck$LassoCheckResult]: Loop: 8#multENTRYtrue ~n := #in~n;~m := #in~m; 5#L13true assume ~m < 0; 17#L14true call #t~ret0 := mult(~n, -~m);< 8#multENTRYtrue [2021-08-31 01:15:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:52,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1390416, now seen corresponding path program 1 times [2021-08-31 01:15:52,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:15:52,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605875692] [2021-08-31 01:15:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:15:52,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:15:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:52,158 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:15:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:52,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:15:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:52,202 INFO L82 PathProgramCache]: Analyzing trace with hash 29915, now seen corresponding path program 1 times [2021-08-31 01:15:52,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:15:52,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383967450] [2021-08-31 01:15:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:15:52,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:15:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:52,221 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:15:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:52,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:15:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1527789780, now seen corresponding path program 1 times [2021-08-31 01:15:52,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:15:52,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835324161] [2021-08-31 01:15:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:15:52,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:15:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:52,255 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:15:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:52,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:15:52,448 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:15:52,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:15:52,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:15:52,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:15:52,449 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:15:52,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:15:52,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:15:52,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2021-08-31 01:15:52,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:15:52,450 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:15:52,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,573 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:15:52,573 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:15:52,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:52,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:52,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-31 01:15:52,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:52,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:52,615 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:52,616 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:52,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:52,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:52,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:52,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-31 01:15:52,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:52,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:52,669 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:52,669 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:52,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:52,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:52,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:52,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:52,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:52,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-31 01:15:52,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:52,717 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:52,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:52,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:52,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:52,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-31 01:15:52,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:52,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:52,773 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:52,773 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:52,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:52,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:52,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:52,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-31 01:15:52,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:52,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:52,808 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:52,808 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:52,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:52,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:52,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:52,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-31 01:15:52,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:52,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:52,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:52,859 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:52,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:52,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:52,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:52,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:52,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:52,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-31 01:15:52,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:52,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:52,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:52,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-31 01:15:52,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:15:52,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:52,969 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:15:52,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:52,972 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:15:52,972 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:15:52,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:15:52,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:15:52,973 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:15:52,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:52,973 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:15:52,973 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:15:52,973 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2021-08-31 01:15:52,973 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:15:52,973 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:15:52,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:52,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:53,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:53,041 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:15:53,045 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:15:53,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:53,049 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:53,060 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:15:53,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:15:53,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:15:53,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:15:53,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:15:53,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:15:53,070 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:15:53,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:15:53,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-31 01:15:53,088 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:15:53,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:53,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:53,114 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:53,118 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:15:53,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:15:53,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:15:53,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:15:53,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:15:53,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:15:53,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-31 01:15:53,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:15:53,130 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:15:53,145 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:15:53,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-08-31 01:15:53,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:53,167 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:53,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-31 01:15:53,210 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:15:53,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:15:53,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:15:53,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:15:53,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:15:53,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:15:53,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:15:53,219 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:15:53,236 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:15:53,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:53,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:53,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:53,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-31 01:15:53,256 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:15:53,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:15:53,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:15:53,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:15:53,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:15:53,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:15:53,264 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:15:53,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:15:53,278 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:15:53,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-08-31 01:15:53,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:53,294 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:53,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-31 01:15:53,296 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:15:53,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:15:53,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:15:53,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:15:53,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:15:53,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:15:53,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:15:53,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:15:53,312 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:15:53,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-08-31 01:15:53,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:53,330 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:53,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-31 01:15:53,332 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:15:53,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:15:53,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:15:53,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:15:53,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:15:53,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:15:53,340 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:15:53,340 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:15:53,348 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:15:53,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:53,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:53,365 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:53,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-31 01:15:53,367 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:15:53,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:15:53,374 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:15:53,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:15:53,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:15:53,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:15:53,375 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:15:53,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:15:53,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:15:53,387 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-31 01:15:53,387 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:15:53,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:53,389 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:53,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-31 01:15:53,392 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:15:53,392 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:15:53,392 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:15:53,393 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2021-08-31 01:15:53,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:53,413 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:15:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:15:53,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:15:53,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:15:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:15:53,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-31 01:15:53,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:15:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:15:53,585 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 [2021-08-31 01:15:53,586 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:15:53,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:53,693 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 59 transitions. Complement of second has 12 states. [2021-08-31 01:15:53,695 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 [2021-08-31 01:15:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:15:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-08-31 01:15:53,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-31 01:15:53,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:15:53,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-31 01:15:53,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:15:53,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2021-08-31 01:15:53,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:15:53,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2021-08-31 01:15:53,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:15:53,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 21 states and 24 transitions. [2021-08-31 01:15:53,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-08-31 01:15:53,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-08-31 01:15:53,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2021-08-31 01:15:53,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:15:53,723 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-08-31 01:15:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2021-08-31 01:15:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2021-08-31 01:15:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:15:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-08-31 01:15:53,750 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-08-31 01:15:53,750 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-08-31 01:15:53,750 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 01:15:53,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2021-08-31 01:15:53,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:15:53,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:15:53,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:15:53,752 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-31 01:15:53,752 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:15:53,752 INFO L791 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 120#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 126#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 122#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 127#multENTRY ~n := #in~n;~m := #in~m; 121#L13 assume !(~m < 0); 123#L16 [2021-08-31 01:15:53,753 INFO L793 eck$LassoCheckResult]: Loop: 123#L16 assume !(0 == ~m); 129#L19 call #t~ret1 := mult(~n, ~m - 1);< 131#multENTRY ~n := #in~n;~m := #in~m; 132#L13 assume !(~m < 0); 123#L16 [2021-08-31 01:15:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:53,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1336189782, now seen corresponding path program 1 times [2021-08-31 01:15:53,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:15:53,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110509151] [2021-08-31 01:15:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:15:53,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:15:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:53,774 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:15:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:53,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:15:53,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:53,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1253150, now seen corresponding path program 1 times [2021-08-31 01:15:53,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:15:53,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357079455] [2021-08-31 01:15:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:15:53,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:15:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:53,789 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:15:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:53,794 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:15:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash -614723597, now seen corresponding path program 1 times [2021-08-31 01:15:53,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:15:53,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403790737] [2021-08-31 01:15:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:15:53,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:15:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:53,827 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:15:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:53,835 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:15:53,931 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:15:53,932 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:15:53,932 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:15:53,932 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:15:53,932 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:15:53,932 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:53,932 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:15:53,933 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:15:53,933 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2021-08-31 01:15:53,933 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:15:53,933 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:15:53,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:53,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:53,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:53,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:53,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:54,000 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:15:54,000 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:15:54,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:54,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:54,002 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:54,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-31 01:15:54,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:54,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:54,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:54,027 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:54,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:54,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:54,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:54,044 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:54,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-31 01:15:54,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:54,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:54,070 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:54,070 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:54,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:54,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:54,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:54,099 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:54,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:54,113 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:54,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-31 01:15:54,141 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:54,141 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:54,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:54,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:54,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:54,166 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:54,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:54,169 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:54,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-31 01:15:54,182 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:15:54,183 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=-8, mult_#in~n=-8} Honda state: {mult_~n=-8, mult_#in~n=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:15:54,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:54,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:54,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:54,202 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:54,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-31 01:15:54,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:54,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:54,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:54,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:54,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:54,238 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:54,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-31 01:15:54,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:15:54,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:58,776 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:15:58,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-08-31 01:15:58,781 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:15:58,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:15:58,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:15:58,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:15:58,781 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:15:58,781 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:58,781 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:15:58,781 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:15:58,781 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2021-08-31 01:15:58,781 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:15:58,781 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:15:58,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:58,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:58,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:58,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:58,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:58,863 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:15:58,863 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:15:58,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:58,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:58,865 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:58,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-31 01:15:58,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:15:58,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:15:58,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:15:58,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:15:58,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:15:58,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:15:58,876 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:15:58,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:15:58,892 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:15:58,906 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:15:58,906 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 01:15:58,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:58,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:58,907 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:58,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-31 01:15:58,911 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:15:58,911 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:15:58,911 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:15:58,911 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2021-08-31 01:15:58,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:58,937 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:15:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:15:58,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:15:58,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:15:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:15:59,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 01:15:59,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:15:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:15:59,137 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-31 01:15:59,138 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:15:59,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-31 01:15:59,288 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 31 transitions. Complement of second has 15 states. [2021-08-31 01:15:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-08-31 01:15:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:15:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2021-08-31 01:15:59,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 6 letters. Loop has 4 letters. [2021-08-31 01:15:59,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:15:59,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2021-08-31 01:15:59,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:15:59,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 6 letters. Loop has 8 letters. [2021-08-31 01:15:59,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:15:59,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2021-08-31 01:15:59,293 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:15:59,294 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 30 transitions. [2021-08-31 01:15:59,294 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-08-31 01:15:59,295 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-08-31 01:15:59,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2021-08-31 01:15:59,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:15:59,295 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-08-31 01:15:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2021-08-31 01:15:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-08-31 01:15:59,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:15:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-08-31 01:15:59,304 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-08-31 01:15:59,304 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-08-31 01:15:59,304 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 01:15:59,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2021-08-31 01:15:59,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:15:59,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:15:59,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:15:59,307 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 01:15:59,307 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:15:59,307 INFO L791 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 228#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 235#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 236#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 241#multENTRY ~n := #in~n;~m := #in~m; 246#L13 assume !(~m < 0); 244#L16 assume !(0 == ~m); 230#L19 call #t~ret1 := mult(~n, ~m - 1);< 247#multENTRY ~n := #in~n;~m := #in~m; 229#L13 assume ~m < 0; 231#L14 [2021-08-31 01:15:59,307 INFO L793 eck$LassoCheckResult]: Loop: 231#L14 call #t~ret0 := mult(~n, -~m);< 237#multENTRY ~n := #in~n;~m := #in~m; 239#L13 assume ~m < 0; 231#L14 [2021-08-31 01:15:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash -614723600, now seen corresponding path program 1 times [2021-08-31 01:15:59,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:15:59,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714073426] [2021-08-31 01:15:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:15:59,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:15:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:15:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:15:59,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:15:59,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714073426] [2021-08-31 01:15:59,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714073426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:15:59,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:15:59,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-31 01:15:59,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43512461] [2021-08-31 01:15:59,403 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:15:59,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:15:59,403 INFO L82 PathProgramCache]: Analyzing trace with hash 59585, now seen corresponding path program 2 times [2021-08-31 01:15:59,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:15:59,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046426852] [2021-08-31 01:15:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:15:59,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:15:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:59,407 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:15:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:15:59,409 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:15:59,474 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:15:59,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:15:59,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:15:59,475 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:15:59,475 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:15:59,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:59,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:15:59,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:15:59,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2021-08-31 01:15:59,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:15:59,475 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:15:59,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:59,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:59,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:59,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:59,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:15:59,527 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:15:59,528 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:15:59,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:59,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:59,533 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:59,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-31 01:15:59,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:15:59,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:15:59,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-08-31 01:15:59,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:15:59,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:15:59,569 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:15:59,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-31 01:15:59,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:15:59,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:16:00,576 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:16:00,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-08-31 01:16:00,580 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:16:00,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:16:00,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:16:00,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:16:00,580 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:16:00,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:16:00,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:16:00,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:16:00,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2021-08-31 01:16:00,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:16:00,580 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:16:00,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:16:00,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:16:00,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:16:00,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:16:00,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:16:00,634 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:16:00,634 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:16:00,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:16:00,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:16:00,635 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:16:00,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-31 01:16:00,649 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:16:00,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:16:00,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:16:00,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:16:00,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:16:00,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:16:00,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:16:00,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:16:00,668 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:16:00,675 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-31 01:16:00,675 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:16:00,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:16:00,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:16:00,676 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:16:00,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-31 01:16:00,678 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:16:00,678 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:16:00,678 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:16:00,678 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2021-08-31 01:16:00,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-08-31 01:16:00,696 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:16:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:16:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:16:00,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-31 01:16:00,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:16:00,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-31 01:16:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:16:00,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-31 01:16:00,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:16:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:16:00,801 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 [2021-08-31 01:16:00,801 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:16:00,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 51 states and 61 transitions. Complement of second has 9 states. [2021-08-31 01:16:00,829 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 [2021-08-31 01:16:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:16:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-08-31 01:16:00,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-31 01:16:00,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:16:00,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2021-08-31 01:16:00,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:16:00,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2021-08-31 01:16:00,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:16:00,831 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2021-08-31 01:16:00,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:16:00,834 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 44 states and 54 transitions. [2021-08-31 01:16:00,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-08-31 01:16:00,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-08-31 01:16:00,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2021-08-31 01:16:00,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:16:00,834 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2021-08-31 01:16:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2021-08-31 01:16:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2021-08-31 01:16:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 27 states have internal predecessors, (34), 10 states have call successors, (13), 10 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:16:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-08-31 01:16:00,837 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-08-31 01:16:00,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:16:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-31 01:16:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-31 01:16:00,840 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:16:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:16:00,877 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-08-31 01:16:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-31 01:16:00,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 35 transitions. [2021-08-31 01:16:00,879 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 01:16:00,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2021-08-31 01:16:00,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 01:16:00,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 01:16:00,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 01:16:00,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:16:00,880 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:16:00,880 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:16:00,880 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:16:00,880 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 01:16:00,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-31 01:16:00,880 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 01:16:00,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-31 01:16:00,882 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) at de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData.toString(StatisticsData.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerTimingBenchmark.toString(BuchiAutomizerTimingBenchmark.java:44) at de.uni_freiburg.informatik.ultimate.core.lib.results.StatisticsResult.getLongDescription(StatisticsResult.java:58) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.reportResult(BuchiAutomizerObserver.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-31 01:16:00,886 INFO L158 Benchmark]: Toolchain (without parser) took 9336.70ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 29.9MB in the beginning and 48.3MB in the end (delta: -18.5MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-08-31 01:16:00,887 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 34.1MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:16:00,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.62ms. Allocated memory is still 52.4MB. Free memory was 29.7MB in the beginning and 32.9MB in the end (delta: -3.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-08-31 01:16:00,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.09ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 32.9MB in the beginning and 47.3MB in the end (delta: -14.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-31 01:16:00,893 INFO L158 Benchmark]: Boogie Preprocessor took 17.72ms. Allocated memory is still 62.9MB. Free memory was 47.2MB in the beginning and 46.4MB in the end (delta: 794.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:16:00,894 INFO L158 Benchmark]: RCFGBuilder took 186.19ms. Allocated memory is still 62.9MB. Free memory was 46.4MB in the beginning and 38.8MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-31 01:16:00,894 INFO L158 Benchmark]: BuchiAutomizer took 8927.09ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.8MB in the beginning and 48.3MB in the end (delta: -9.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-08-31 01:16:00,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 34.1MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.62ms. Allocated memory is still 52.4MB. Free memory was 29.7MB in the beginning and 32.9MB in the end (delta: -3.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.09ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 32.9MB in the beginning and 47.3MB in the end (delta: -14.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.72ms. Allocated memory is still 62.9MB. Free memory was 47.2MB in the beginning and 46.4MB in the end (delta: 794.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 186.19ms. Allocated memory is still 62.9MB. Free memory was 46.4MB in the beginning and 38.8MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 8927.09ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.8MB in the beginning and 48.3MB in the end (delta: -9.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 6 locations. One deterministic module has affine ranking function m and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6): de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-31 01:16:00,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...