./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/c.08.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-restricted-15/c.08.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 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:32:50,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 01:32:50,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 01:32:50,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 01:32:50,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 01:32:50,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 01:32:50,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 01:32:50,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 01:32:50,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 01:32:50,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 01:32:50,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 01:32:50,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 01:32:50,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 01:32:50,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 01:32:50,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 01:32:50,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 01:32:50,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 01:32:50,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 01:32:50,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 01:32:50,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 01:32:50,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 01:32:50,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 01:32:50,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 01:32:50,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 01:32:50,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 01:32:50,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 01:32:50,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 01:32:50,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 01:32:50,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 01:32:50,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 01:32:50,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 01:32:50,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 01:32:50,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 01:32:50,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 01:32:50,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 01:32:50,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 01:32:50,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 01:32:50,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 01:32:50,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 01:32:50,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 01:32:50,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 01:32:50,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-31 01:32:50,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 01:32:50,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 01:32:50,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 01:32:50,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 01:32:50,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 01:32:50,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 01:32:50,740 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 01:32:50,740 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 01:32:50,741 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 01:32:50,741 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 01:32:50,741 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 01:32:50,741 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 01:32:50,741 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 01:32:50,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 01:32:50,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 01:32:50,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 01:32:50,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 01:32:50,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 01:32:50,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 01:32:50,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 01:32:50,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 01:32:50,743 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 01:32:50,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 01:32:50,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 01:32:50,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 01:32:50,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 01:32:50,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 01:32:50,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 01:32:50,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 01:32:50,745 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 01:32:50,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 [2021-08-31 01:32:51,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 01:32:51,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 01:32:51,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 01:32:51,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 01:32:51,036 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 01:32:51,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/c.08.c [2021-08-31 01:32:51,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe752bb26/4ecaaca0e45f478986329bff197cf17b/FLAG35a106f87 [2021-08-31 01:32:51,519 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 01:32:51,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/c.08.c [2021-08-31 01:32:51,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe752bb26/4ecaaca0e45f478986329bff197cf17b/FLAG35a106f87 [2021-08-31 01:32:51,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe752bb26/4ecaaca0e45f478986329bff197cf17b [2021-08-31 01:32:51,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 01:32:51,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 01:32:51,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 01:32:51,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 01:32:51,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 01:32:51,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:32:51" (1/1) ... [2021-08-31 01:32:51,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f43673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:51, skipping insertion in model container [2021-08-31 01:32:51,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:32:51" (1/1) ... [2021-08-31 01:32:51,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 01:32:51,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 01:32:52,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:32:52,102 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 01:32:52,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:32:52,122 INFO L208 MainTranslator]: Completed translation [2021-08-31 01:32:52,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52 WrapperNode [2021-08-31 01:32:52,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 01:32:52,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 01:32:52,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 01:32:52,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 01:32:52,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 01:32:52,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 01:32:52,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 01:32:52,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 01:32:52,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 01:32:52,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 01:32:52,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 01:32:52,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 01:32:52,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (1/1) ... [2021-08-31 01:32:52,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:52,226 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 01:32:52,254 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 01:32:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 01:32:52,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 01:32:52,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 01:32:52,357 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-31 01:32:52,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:32:52 BoogieIcfgContainer [2021-08-31 01:32:52,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 01:32:52,361 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 01:32:52,361 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 01:32:52,364 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 01:32:52,365 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:32:52,365 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 01:32:51" (1/3) ... [2021-08-31 01:32:52,366 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1085999e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:32:52, skipping insertion in model container [2021-08-31 01:32:52,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:32:52,366 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:52" (2/3) ... [2021-08-31 01:32:52,366 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1085999e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:32:52, skipping insertion in model container [2021-08-31 01:32:52,367 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:32:52,367 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:32:52" (3/3) ... [2021-08-31 01:32:52,368 INFO L389 chiAutomizerObserver]: Analyzing ICFG c.08.c [2021-08-31 01:32:52,418 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 01:32:52,418 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 01:32:52,419 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 01:32:52,419 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 01:32:52,419 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 01:32:52,419 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 01:32:52,420 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 01:32:52,420 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 01:32:52,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:52,442 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 01:32:52,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:32:52,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:32:52,447 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:32:52,447 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:32:52,448 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 01:32:52,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:52,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 01:32:52,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:32:52,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:32:52,450 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:32:52,450 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:32:52,455 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 5#L10-2true [2021-08-31 01:32:52,457 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~i~0 >= 0);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 <= main_~i~0 - 1); 8#L12-3true main_~i~0 := main_~i~0 - 1; 5#L10-2true [2021-08-31 01:32:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-31 01:32:52,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:52,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786776549] [2021-08-31 01:32:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:52,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:52,544 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:52,564 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:52,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:52,568 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-08-31 01:32:52,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:52,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208969493] [2021-08-31 01:32:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:52,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:52,585 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:52,603 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:52,605 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2021-08-31 01:32:52,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:52,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947698166] [2021-08-31 01:32:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:52,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:52,620 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:52,632 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:52,754 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:52,754 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:52,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:52,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:52,755 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:32:52,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:52,755 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:52,755 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:52,755 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2021-08-31 01:32:52,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:52,756 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:52,785 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 01:32:52,804 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 01:32:52,808 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 01:32:52,875 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:52,875 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:32:52,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:52,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:52,879 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 01:32:52,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:52,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:52,901 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 01:32:52,913 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:32:52,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:32:52,944 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 01:32:52,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:52,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:52,946 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 01:32:52,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:52,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:52,966 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 01:32:52,990 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:32:52,990 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:32:53,018 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 01:32:53,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,020 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 01:32:53,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:53,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:53,038 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 01:32:53,083 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 01:32:53,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,084 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 01:32:53,095 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 01:32:53,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:32:53,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:53,131 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:32:53,137 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 01:32:53,138 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:53,138 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:53,138 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:53,138 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:53,138 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:32:53,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:53,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:53,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2021-08-31 01:32:53,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:53,139 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:53,140 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 01:32:53,144 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 01:32:53,147 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 01:32:53,224 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:53,227 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:32:53,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,230 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 01:32:53,248 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 01:32:53,248 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 01:32:53,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:53,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:53,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:53,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:53,261 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:32:53,261 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:32:53,295 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:32:53,344 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 01:32:53,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,346 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 01:32:53,348 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 01:32:53,349 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 01:32:53,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:53,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:53,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:53,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:53,360 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:32:53,360 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:32:53,372 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:32:53,388 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 01:32:53,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,390 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 01:32:53,391 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 01:32:53,392 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 01:32:53,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:53,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:32:53,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:53,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:53,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:53,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:32:53,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:32:53,422 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:32:53,425 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:32:53,426 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:32:53,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,428 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 01:32:53,429 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 01:32:53,431 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:32:53,431 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:32:53,431 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:32:53,431 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-08-31 01:32:53,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-08-31 01:32:53,449 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:32:53,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:53,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:32:53,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:53,500 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:32:53,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:53,530 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 01:32:53,564 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-31 01:32:53,565 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:53,629 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 35 transitions. Complement of second has 7 states. [2021-08-31 01:32:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 01:32:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-08-31 01:32:53,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2021-08-31 01:32:53,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:53,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-31 01:32:53,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:53,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2021-08-31 01:32:53,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:53,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2021-08-31 01:32:53,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-31 01:32:53,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2021-08-31 01:32:53,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-31 01:32:53,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-08-31 01:32:53,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-08-31 01:32:53,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:32:53,651 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-31 01:32:53,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-08-31 01:32:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-08-31 01:32:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2021-08-31 01:32:53,671 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-08-31 01:32:53,671 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-08-31 01:32:53,671 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 01:32:53,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2021-08-31 01:32:53,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-31 01:32:53,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:32:53,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:32:53,672 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-31 01:32:53,672 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-31 01:32:53,672 INFO L791 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 73#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 70#L12-2 [2021-08-31 01:32:53,673 INFO L793 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 70#L12-2 [2021-08-31 01:32:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-31 01:32:53,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:53,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450137772] [2021-08-31 01:32:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:53,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:53,682 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:53,690 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:53,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:53,691 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-08-31 01:32:53,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:53,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574378634] [2021-08-31 01:32:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:53,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:53,701 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:53,713 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:53,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:53,717 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2021-08-31 01:32:53,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:53,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558226274] [2021-08-31 01:32:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:53,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:53,724 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:53,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:53,750 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:53,750 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:53,750 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:53,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:53,751 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:32:53,751 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,751 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:53,751 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:53,751 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2021-08-31 01:32:53,751 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:53,751 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:53,753 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 01:32:53,756 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 01:32:53,761 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 01:32:53,795 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:53,796 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:32:53,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,801 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 01:32:53,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:53,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:53,822 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 01:32:53,833 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:32:53,833 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:32:53,861 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 01:32:53,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,873 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 01:32:53,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:53,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:53,898 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 01:32:53,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:53,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:53,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:53,940 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 01:32:53,941 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 01:32:53,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:32:53,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:54,079 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:32:54,085 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 01:32:54,086 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:54,086 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:54,086 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:54,087 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:54,087 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:32:54,087 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,087 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:54,087 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:54,087 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2021-08-31 01:32:54,087 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:54,087 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:54,088 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 01:32:54,096 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 01:32:54,103 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 01:32:54,135 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:54,135 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:32:54,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:54,137 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 01:32:54,148 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 01:32:54,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:54,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:54,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:54,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:54,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:32:54,162 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:32:54,165 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 01:32:54,172 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:32:54,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:54,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:54,203 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 01:32:54,209 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 01:32:54,210 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 01:32:54,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:54,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:32:54,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:54,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:54,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:54,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:32:54,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:32:54,231 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:32:54,243 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:32:54,243 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:32:54,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:54,245 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 01:32:54,249 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 01:32:54,249 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:32:54,249 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:32:54,249 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:32:54,249 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-31 01:32:54,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:54,265 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:32:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:32:54,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,316 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:32:54,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:54,317 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 01:32:54,317 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:32:54,317 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,330 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 01:32:54,346 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 18 transitions. Complement of second has 5 states. [2021-08-31 01:32:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:32:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-31 01:32:54,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2021-08-31 01:32:54,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:54,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2021-08-31 01:32:54,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:54,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-08-31 01:32:54,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:54,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-08-31 01:32:54,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-31 01:32:54,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2021-08-31 01:32:54,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-31 01:32:54,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-08-31 01:32:54,356 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 01:32:54,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2021-08-31 01:32:54,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:32:54,356 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-08-31 01:32:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2021-08-31 01:32:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2021-08-31 01:32:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-08-31 01:32:54,364 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-08-31 01:32:54,364 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-08-31 01:32:54,364 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 01:32:54,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2021-08-31 01:32:54,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-31 01:32:54,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:32:54,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:32:54,366 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-08-31 01:32:54,366 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-31 01:32:54,366 INFO L791 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 121#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 119#L12-2 assume !(main_~j~0 <= main_~i~0 - 1); 120#L12-3 main_~i~0 := main_~i~0 - 1; 122#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 118#L12-2 [2021-08-31 01:32:54,366 INFO L793 eck$LassoCheckResult]: Loop: 118#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 118#L12-2 [2021-08-31 01:32:54,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:54,367 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2021-08-31 01:32:54,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:54,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382742116] [2021-08-31 01:32:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:54,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:32:54,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:32:54,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382742116] [2021-08-31 01:32:54,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382742116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:32:54,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:32:54,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-31 01:32:54,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507767969] [2021-08-31 01:32:54,439 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:32:54,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:54,440 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2021-08-31 01:32:54,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:54,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117328957] [2021-08-31 01:32:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:54,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:54,451 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:54,456 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:54,478 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:54,479 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:54,479 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:54,479 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:54,479 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:32:54,479 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,479 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:54,479 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:54,480 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2021-08-31 01:32:54,480 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:54,480 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:54,481 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 01:32:54,483 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 01:32:54,487 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 01:32:54,513 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:54,514 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:32:54,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:54,515 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 01:32:54,519 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 01:32:54,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:54,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:54,542 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:32:54,542 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:32:54,568 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 01:32:54,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:54,569 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 01:32:54,570 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 01:32:54,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:54,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:54,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-08-31 01:32:54,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:54,606 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 01:32:54,607 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 01:32:54,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:32:54,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:54,717 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:32:54,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-08-31 01:32:54,722 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:54,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:54,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:54,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:54,723 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:32:54,723 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,723 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:54,723 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:54,723 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2021-08-31 01:32:54,723 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:54,723 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:54,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:54,733 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 01:32:54,735 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 01:32:54,769 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:54,769 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:32:54,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:54,770 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 01:32:54,788 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 01:32:54,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:54,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:32:54,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:54,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:54,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:54,797 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:32:54,797 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:32:54,799 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 01:32:54,812 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:32:54,816 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:32:54,816 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 01:32:54,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:54,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:54,817 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 01:32:54,819 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 01:32:54,819 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:32:54,820 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:32:54,820 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:32:54,820 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-31 01:32:54,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-08-31 01:32:54,843 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:32:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:32:54,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,881 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:32:54,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:54,881 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 01:32:54,882 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:32:54,882 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,893 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 15 transitions. Complement of second has 5 states. [2021-08-31 01:32:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:32:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-31 01:32:54,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2021-08-31 01:32:54,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:54,895 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 01:32:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:32:54,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,930 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:32:54,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:54,930 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 01:32:54,932 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:32:54,932 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,944 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 15 transitions. Complement of second has 5 states. [2021-08-31 01:32:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:32:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-31 01:32:54,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2021-08-31 01:32:54,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:54,945 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 01:32:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:32:54,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:54,975 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:32:54,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:54,976 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 01:32:54,976 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:32:54,977 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,993 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 11 transitions. Complement of second has 4 states. [2021-08-31 01:32:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:32:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-08-31 01:32:54,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2021-08-31 01:32:54,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:54,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2021-08-31 01:32:54,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:54,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-08-31 01:32:54,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:54,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2021-08-31 01:32:54,999 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 01:32:54,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2021-08-31 01:32:54,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 01:32:54,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 01:32:54,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 01:32:54,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:32:54,999 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:32:54,999 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:32:54,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:32:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-31 01:32:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-31 01:32:55,004 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:55,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:32:55,006 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-31 01:32:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-31 01:32:55,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-31 01:32:55,008 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 01:32:55,008 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-31 01:32:55,008 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 01:32:55,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 01:32:55,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 01:32:55,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:32:55,009 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:32:55,009 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:32:55,009 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:32:55,009 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 01:32:55,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-31 01:32:55,009 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 01:32:55,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-31 01:32:55,013 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 01:32:55,016 INFO L158 Benchmark]: Toolchain (without parser) took 3058.25ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.3MB in the beginning and 25.6MB in the end (delta: 13.6MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2021-08-31 01:32:55,016 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 25.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:32:55,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.04ms. Allocated memory is still 60.8MB. Free memory was 39.1MB in the beginning and 30.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 01:32:55,017 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.13ms. Allocated memory is still 60.8MB. Free memory was 30.2MB in the beginning and 29.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:32:55,017 INFO L158 Benchmark]: Boogie Preprocessor took 50.62ms. Allocated memory is still 60.8MB. Free memory was 29.0MB in the beginning and 44.3MB in the end (delta: -15.3MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-08-31 01:32:55,017 INFO L158 Benchmark]: RCFGBuilder took 162.14ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 37.1MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-31 01:32:55,018 INFO L158 Benchmark]: BuchiAutomizer took 2652.95ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 36.9MB in the beginning and 25.6MB in the end (delta: 11.3MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2021-08-31 01:32:55,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 41.7MB in the beginning and 41.7MB in the end (delta: 25.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 152.04ms. Allocated memory is still 60.8MB. Free memory was 39.1MB in the beginning and 30.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.13ms. Allocated memory is still 60.8MB. Free memory was 30.2MB in the beginning and 29.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.62ms. Allocated memory is still 60.8MB. Free memory was 29.0MB in the beginning and 44.3MB in the end (delta: -15.3MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * RCFGBuilder took 162.14ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 37.1MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 2652.95ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 36.9MB in the beginning and 25.6MB in the end (delta: 11.3MB). Peak memory consumption was 24.4MB. 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, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function i + -1 * j and consists of 3 locations. One nondeterministic module has affine ranking function i + -1 * j and consists of 3 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 01:32:55,043 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 01:32:55,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...