./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex08.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/Ex08.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 0f19c27ba74e1ebec32cb641e6640521812ace19 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:30:47,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 01:30:47,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 01:30:47,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 01:30:47,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 01:30:47,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 01:30:47,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 01:30:47,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 01:30:47,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 01:30:47,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 01:30:47,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 01:30:47,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 01:30:47,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 01:30:47,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 01:30:47,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 01:30:47,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 01:30:47,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 01:30:47,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 01:30:47,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 01:30:47,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 01:30:47,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 01:30:47,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 01:30:47,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 01:30:47,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 01:30:47,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 01:30:47,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 01:30:47,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 01:30:47,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 01:30:47,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 01:30:47,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 01:30:47,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 01:30:47,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 01:30:47,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 01:30:47,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 01:30:47,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 01:30:47,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 01:30:47,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 01:30:47,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 01:30:47,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 01:30:47,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 01:30:47,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 01:30:47,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-31 01:30:48,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 01:30:48,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 01:30:48,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 01:30:48,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 01:30:48,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 01:30:48,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 01:30:48,006 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 01:30:48,007 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 01:30:48,007 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 01:30:48,007 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 01:30:48,008 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 01:30:48,008 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 01:30:48,008 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 01:30:48,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 01:30:48,008 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 01:30:48,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 01:30:48,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 01:30:48,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 01:30:48,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 01:30:48,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 01:30:48,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 01:30:48,009 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 01:30:48,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 01:30:48,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 01:30:48,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 01:30:48,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 01:30:48,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 01:30:48,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 01:30:48,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 01:30:48,011 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 01:30:48,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f19c27ba74e1ebec32cb641e6640521812ace19 [2021-08-31 01:30:48,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 01:30:48,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 01:30:48,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 01:30:48,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 01:30:48,293 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 01:30:48,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-08-31 01:30:48,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8772fb7dc/a4c68732f92249d5bc5f44c1b55ba7fc/FLAG6e2805f43 [2021-08-31 01:30:48,642 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 01:30:48,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-08-31 01:30:48,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8772fb7dc/a4c68732f92249d5bc5f44c1b55ba7fc/FLAG6e2805f43 [2021-08-31 01:30:49,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8772fb7dc/a4c68732f92249d5bc5f44c1b55ba7fc [2021-08-31 01:30:49,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 01:30:49,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 01:30:49,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 01:30:49,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 01:30:49,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 01:30:49,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e45560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49, skipping insertion in model container [2021-08-31 01:30:49,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 01:30:49,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 01:30:49,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:30:49,207 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 01:30:49,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:30:49,221 INFO L208 MainTranslator]: Completed translation [2021-08-31 01:30:49,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49 WrapperNode [2021-08-31 01:30:49,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 01:30:49,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 01:30:49,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 01:30:49,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 01:30:49,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 01:30:49,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 01:30:49,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 01:30:49,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 01:30:49,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 01:30:49,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 01:30:49,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 01:30:49,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 01:30:49,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (1/1) ... [2021-08-31 01:30:49,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:49,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:49,312 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 01:30:49,318 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 01:30:49,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 01:30:49,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 01:30:49,404 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 01:30:49,404 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-31 01:30:49,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:30:49 BoogieIcfgContainer [2021-08-31 01:30:49,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 01:30:49,406 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 01:30:49,406 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 01:30:49,408 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 01:30:49,408 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:30:49,408 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 01:30:49" (1/3) ... [2021-08-31 01:30:49,409 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2521fd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:30:49, skipping insertion in model container [2021-08-31 01:30:49,409 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:30:49,409 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:30:49" (2/3) ... [2021-08-31 01:30:49,409 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2521fd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:30:49, skipping insertion in model container [2021-08-31 01:30:49,410 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:30:49,410 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:30:49" (3/3) ... [2021-08-31 01:30:49,410 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2021-08-31 01:30:49,436 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 01:30:49,436 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 01:30:49,436 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 01:30:49,437 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 01:30:49,437 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 01:30:49,437 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 01:30:49,437 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 01:30:49,437 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 01:30:49,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 01:30:49,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-31 01:30:49,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:49,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:49,457 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:30:49,458 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:49,458 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 01:30:49,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 01:30:49,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-31 01:30:49,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:49,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:49,459 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:30:49,459 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:49,463 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6#L18-1true [2021-08-31 01:30:49,463 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(main_~i~0 > 0); 10#L12true assume 1 == main_~i~0;main_~up~0 := 1; 3#L12-2true assume 10 == main_~i~0;main_~up~0 := 0; 8#L15-1true assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6#L18-1true [2021-08-31 01:30:49,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:49,466 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-31 01:30:49,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:49,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047363506] [2021-08-31 01:30:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:49,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,519 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,538 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:49,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-08-31 01:30:49,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:49,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615499134] [2021-08-31 01:30:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:49,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:49,638 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 01:30:49,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:49,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615499134] [2021-08-31 01:30:49,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615499134] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:30:49,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:30:49,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 01:30:49,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669837211] [2021-08-31 01:30:49,649 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:30:49,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:30:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 01:30:49,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 01:30:49,680 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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), 3 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 01:30:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:30:49,726 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2021-08-31 01:30:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 01:30:49,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 19 transitions. [2021-08-31 01:30:49,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-31 01:30:49,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 14 transitions. [2021-08-31 01:30:49,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-08-31 01:30:49,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-08-31 01:30:49,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2021-08-31 01:30:49,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:30:49,743 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-31 01:30:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2021-08-31 01:30:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-31 01:30:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 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 01:30:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-08-31 01:30:49,770 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-31 01:30:49,771 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-31 01:30:49,771 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 01:30:49,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-08-31 01:30:49,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-31 01:30:49,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:49,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:49,773 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:30:49,773 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:49,773 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 34#L18-1 [2021-08-31 01:30:49,773 INFO L793 eck$LassoCheckResult]: Loop: 34#L18-1 assume !!(main_~i~0 > 0); 39#L12 assume !(1 == main_~i~0); 37#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 38#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 34#L18-1 [2021-08-31 01:30:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:49,775 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-08-31 01:30:49,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:49,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386481329] [2021-08-31 01:30:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:49,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,779 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:49,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2021-08-31 01:30:49,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:49,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736197671] [2021-08-31 01:30:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:49,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:49,810 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 01:30:49,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:49,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736197671] [2021-08-31 01:30:49,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736197671] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:30:49,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:30:49,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-31 01:30:49,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011591557] [2021-08-31 01:30:49,811 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:30:49,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:30:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 01:30:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 01:30:49,812 INFO L87 Difference]: Start difference. First operand 9 states and 14 transitions. cyclomatic complexity: 6 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 01:30:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:30:49,826 INFO L93 Difference]: Finished difference Result 13 states and 20 transitions. [2021-08-31 01:30:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 01:30:49,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2021-08-31 01:30:49,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 01:30:49,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 20 transitions. [2021-08-31 01:30:49,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-08-31 01:30:49,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-08-31 01:30:49,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 20 transitions. [2021-08-31 01:30:49,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:30:49,829 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-08-31 01:30:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 20 transitions. [2021-08-31 01:30:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-31 01:30:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 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 01:30:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2021-08-31 01:30:49,831 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-08-31 01:30:49,831 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-08-31 01:30:49,831 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 01:30:49,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2021-08-31 01:30:49,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 01:30:49,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:49,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:49,832 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:30:49,832 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:49,832 INFO L791 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 62#L18-1 [2021-08-31 01:30:49,832 INFO L793 eck$LassoCheckResult]: Loop: 62#L18-1 assume !!(main_~i~0 > 0); 71#L12 assume !(1 == main_~i~0); 70#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 65#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 62#L18-1 [2021-08-31 01:30:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:49,833 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-08-31 01:30:49,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:49,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829504446] [2021-08-31 01:30:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:49,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,835 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:49,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:49,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1236462, now seen corresponding path program 1 times [2021-08-31 01:30:49,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:49,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459740824] [2021-08-31 01:30:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:49,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,843 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,846 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:49,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:49,846 INFO L82 PathProgramCache]: Analyzing trace with hash 29865613, now seen corresponding path program 1 times [2021-08-31 01:30:49,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:49,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426452751] [2021-08-31 01:30:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:49,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,850 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:49,853 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:49,883 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:49,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:49,884 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:49,884 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:49,884 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:30:49,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:49,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:49,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:49,884 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-08-31 01:30:49,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:49,885 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:49,894 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 01:30:49,898 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 01:30:49,900 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 01:30:49,902 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 01:30:49,939 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:49,939 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:30:49,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:49,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:49,968 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 01:30:49,977 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 01:30:49,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:49,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,015 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:50,015 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 01:30:50,032 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 01:30:50,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,041 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 01:30:50,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:50,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,054 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 01:30:50,061 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:50,061 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 01:30:50,078 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 01:30:50,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,080 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 01:30:50,081 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 01:30:50,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:50,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,104 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:50,104 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:50,121 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 01:30:50,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,122 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 01:30:50,123 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 01:30:50,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:50,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,160 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 01:30:50,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,161 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 01:30:50,164 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 01:30:50,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:30:50,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,186 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:30:50,215 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 01:30:50,216 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:50,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:50,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:50,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:50,216 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:30:50,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:50,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:50,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-08-31 01:30:50,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:50,216 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:50,217 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 01:30:50,222 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 01:30:50,226 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 01:30:50,229 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 01:30:50,273 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:50,277 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:30:50,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,291 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 01:30:50,305 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 01:30:50,306 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 01:30:50,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:50,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:50,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:50,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:50,326 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:30:50,326 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:30:50,353 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:50,379 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 01:30:50,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,380 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 01:30:50,384 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 01:30:50,385 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 01:30:50,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:50,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:50,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:50,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:50,394 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:30:50,394 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:30:50,419 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:50,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:50,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,436 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 01:30:50,437 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 01:30:50,438 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 01:30:50,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:50,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:50,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:50,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:50,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:50,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:30:50,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:50,447 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:50,463 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 01:30:50,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,464 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 01:30:50,465 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 01:30:50,465 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 01:30:50,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:50,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:50,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:50,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:50,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:50,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:30:50,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:50,475 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:30:50,505 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:30:50,505 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 01:30:50,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,541 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 01:30:50,604 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 01:30:50,605 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:30:50,606 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:30:50,606 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:30:50,606 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-31 01:30:50,622 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 01:30:50,623 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:30:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:50,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:30:50,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:50,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:30:50,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:50,667 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 01:30:50,669 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 01:30:50,670 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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 01:30:50,696 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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) Result 34 states and 50 transitions. Complement of second has 7 states. [2021-08-31 01:30:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 01:30:50,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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 01:30:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-08-31 01:30:50,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2021-08-31 01:30:50,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:50,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-08-31 01:30:50,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:50,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 1 letters. Loop has 8 letters. [2021-08-31 01:30:50,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:50,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2021-08-31 01:30:50,700 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2021-08-31 01:30:50,701 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 29 states and 43 transitions. [2021-08-31 01:30:50,701 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-08-31 01:30:50,701 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-08-31 01:30:50,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 43 transitions. [2021-08-31 01:30:50,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:50,702 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-08-31 01:30:50,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 43 transitions. [2021-08-31 01:30:50,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-08-31 01:30:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 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 01:30:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-08-31 01:30:50,704 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-08-31 01:30:50,704 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-08-31 01:30:50,704 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 01:30:50,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2021-08-31 01:30:50,705 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-08-31 01:30:50,705 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:50,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:50,705 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-31 01:30:50,705 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:50,705 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 155#L18-1 assume !!(main_~i~0 > 0); 151#L12 [2021-08-31 01:30:50,706 INFO L793 eck$LassoCheckResult]: Loop: 151#L12 assume !(1 == main_~i~0); 166#L12-2 assume !(10 == main_~i~0); 156#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 150#L18-1 assume !!(main_~i~0 > 0); 151#L12 [2021-08-31 01:30:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:50,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-31 01:30:50,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:50,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215131762] [2021-08-31 01:30:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:50,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:50,709 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:50,711 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:50,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:50,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-08-31 01:30:50,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:50,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518657031] [2021-08-31 01:30:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:50,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:50,725 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:50,728 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:50,728 INFO L82 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-08-31 01:30:50,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:50,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196730701] [2021-08-31 01:30:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:50,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:50,732 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:50,735 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:50,761 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 01:30:50,779 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:50,780 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:50,780 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:50,780 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:50,780 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:30:50,780 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,780 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:50,780 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:50,780 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-08-31 01:30:50,780 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:50,781 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:50,781 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 01:30:50,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:30:50,785 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 01:30:50,787 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 01:30:50,837 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:50,838 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:30:50,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,839 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 01:30:50,839 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 01:30:50,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:50,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,860 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:50,861 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 01:30:50,877 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 01:30:50,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,879 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 01:30:50,880 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 01:30:50,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:50,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,892 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:50,892 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:50,911 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 01:30:50,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,912 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 01:30:50,913 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 01:30:50,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:50,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,935 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:50,935 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=4} Honda state: {ULTIMATE.start_main_~up~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:50,953 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 01:30:50,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,954 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 01:30:50,956 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 01:30:50,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:50,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:50,980 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 01:30:50,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:50,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:50,981 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 01:30:50,982 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 01:30:50,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:30:50,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,033 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:30:51,037 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 01:30:51,037 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:51,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:51,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:51,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:51,037 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:30:51,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:51,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:51,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-08-31 01:30:51,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:51,037 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:51,038 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 01:30:51,041 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 01:30:51,043 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 01:30:51,045 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 01:30:51,119 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:51,119 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:30:51,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,120 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 01:30:51,121 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 01:30:51,123 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 01:30:51,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:51,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:51,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:51,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:51,131 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:30:51,131 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:30:51,146 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:51,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,165 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 01:30:51,166 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 01:30:51,167 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 01:30:51,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:51,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:51,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:51,174 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-31 01:30:51,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:51,174 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-31 01:30:51,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:51,176 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:51,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,195 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 01:30:51,196 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 01:30:51,197 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 01:30:51,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:51,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:51,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:51,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:51,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:30:51,206 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:30:51,221 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:51,236 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 01:30:51,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,237 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 01:30:51,238 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 01:30:51,239 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 01:30:51,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:51,247 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:51,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:51,247 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-31 01:30:51,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:51,249 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-31 01:30:51,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:51,280 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:30:51,284 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-31 01:30:51,284 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:30:51,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,285 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-31 01:30:51,290 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:30:51,290 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:30:51,290 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:30:51,291 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-31 01:30:51,307 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 01:30:51,308 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:30:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:51,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:30:51,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:51,335 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:30:51,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:51,360 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 01:30:51,361 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 01:30:51,361 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 01:30:51,377 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 40 states and 58 transitions. Complement of second has 7 states. [2021-08-31 01:30:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 01:30:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 01:30:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-08-31 01:30:51,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-08-31 01:30:51,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:51,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2021-08-31 01:30:51,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:51,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2021-08-31 01:30:51,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:51,384 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 58 transitions. [2021-08-31 01:30:51,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 01:30:51,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 48 transitions. [2021-08-31 01:30:51,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-08-31 01:30:51,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-08-31 01:30:51,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 48 transitions. [2021-08-31 01:30:51,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:51,387 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-08-31 01:30:51,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 48 transitions. [2021-08-31 01:30:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-31 01:30:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 states have internal predecessors, (48), 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 01:30:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2021-08-31 01:30:51,389 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-08-31 01:30:51,389 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-08-31 01:30:51,389 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-31 01:30:51,390 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 48 transitions. [2021-08-31 01:30:51,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 01:30:51,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:51,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:51,391 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-08-31 01:30:51,391 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:51,391 INFO L791 eck$LassoCheckResult]: Stem: 255#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 256#L18-1 assume !!(main_~i~0 > 0); 265#L12 assume 1 == main_~i~0;main_~up~0 := 1; 267#L12-2 assume !(10 == main_~i~0); 272#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 273#L18-1 [2021-08-31 01:30:51,391 INFO L793 eck$LassoCheckResult]: Loop: 273#L18-1 assume !!(main_~i~0 > 0); 280#L12 assume !(1 == main_~i~0); 274#L12-2 assume !(10 == main_~i~0); 275#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 273#L18-1 [2021-08-31 01:30:51,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:51,391 INFO L82 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 1 times [2021-08-31 01:30:51,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:51,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896836391] [2021-08-31 01:30:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:51,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:51,395 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:51,397 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:51,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1236522, now seen corresponding path program 1 times [2021-08-31 01:30:51,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:51,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127462717] [2021-08-31 01:30:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:51,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:51,400 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:51,403 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:51,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1816492656, now seen corresponding path program 1 times [2021-08-31 01:30:51,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:51,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018010863] [2021-08-31 01:30:51,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:51,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:51,406 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:51,409 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:51,427 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:51,427 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:51,428 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:51,428 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:51,428 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:30:51,428 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,428 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:51,428 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:51,428 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2021-08-31 01:30:51,428 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:51,428 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:51,429 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 01:30:51,431 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 01:30:51,433 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 01:30:51,438 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 01:30:51,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,494 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:51,494 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:30:51,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,495 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-31 01:30:51,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:51,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,530 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:51,530 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:51,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,562 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-31 01:30:51,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:51,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,585 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:51,585 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 01:30:51,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,603 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-31 01:30:51,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:51,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,627 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-31 01:30:51,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:30:51,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,669 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:51,669 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=11} Honda state: {ULTIMATE.start_main_~i~0=11} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=1}, {ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~i~0=0}] Lambdas: [1, 31, 31] Nus: [0, 0] [2021-08-31 01:30:51,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,686 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-31 01:30:51,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:51,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:51,699 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:51,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,734 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:51,734 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:51,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:51,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:51,735 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:30:51,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:51,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:51,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-08-31 01:30:51,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:51,735 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:51,736 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 01:30:51,737 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 01:30:51,739 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 01:30:51,741 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 01:30:51,744 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 01:30:51,750 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 01:30:51,828 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:51,829 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:30:51,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,834 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-31 01:30:51,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:51,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,842 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:51,843 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:51,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:51,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,859 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-31 01:30:51,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:51,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:51,884 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:51,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-08-31 01:30:51,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,900 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:30:51,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-31 01:30:51,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:51,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:51,915 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:51,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-08-31 01:30:51,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:51,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:51,930 INFO L229 MonitoredProcess]: Starting monitored process 30 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 01:30:51,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:51,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:51,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-08-31 01:30:52,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:52,003 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:52,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,021 INFO L229 MonitoredProcess]: Starting monitored process 31 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 01:30:52,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-08-31 01:30:52,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:52,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:52,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,064 INFO L229 MonitoredProcess]: Starting monitored process 32 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 01:30:52,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-08-31 01:30:52,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:30:52,066 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:52,097 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:30:52,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,102 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:52,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:52,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:52,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:52,102 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:30:52,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,102 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:52,102 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:52,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-08-31 01:30:52,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:52,103 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:52,104 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 01:30:52,110 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 01:30:52,111 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 01:30:52,114 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 01:30:52,119 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 01:30:52,124 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 01:30:52,199 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:52,199 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:30:52,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,200 INFO L229 MonitoredProcess]: Starting monitored process 33 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 01:30:52,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-08-31 01:30:52,202 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 01:30:52,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:52,208 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:52,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:52,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:52,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:52,209 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:30:52,209 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:52,223 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:52,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,241 INFO L229 MonitoredProcess]: Starting monitored process 34 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 01:30:52,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-08-31 01:30:52,243 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 01:30:52,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:52,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:52,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:52,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:52,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:52,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:30:52,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:52,264 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:52,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,282 INFO L229 MonitoredProcess]: Starting monitored process 35 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 01:30:52,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-08-31 01:30:52,284 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 01:30:52,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:52,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:52,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:52,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:52,291 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:30:52,291 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:30:52,306 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:52,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,324 INFO L229 MonitoredProcess]: Starting monitored process 36 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 01:30:52,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-08-31 01:30:52,326 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 01:30:52,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:52,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:52,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:52,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:52,333 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:30:52,334 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:30:52,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:52,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,366 INFO L229 MonitoredProcess]: Starting monitored process 37 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 01:30:52,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-08-31 01:30:52,368 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 01:30:52,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:52,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:52,374 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-31 01:30:52,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:52,379 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-08-31 01:30:52,379 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-08-31 01:30:52,391 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:30:52,401 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-08-31 01:30:52,401 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-08-31 01:30:52,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,402 INFO L229 MonitoredProcess]: Starting monitored process 38 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 01:30:52,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-08-31 01:30:52,403 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:30:52,426 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-08-31 01:30:52,426 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:30:52,426 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 21 Supporting invariants [-1*ULTIMATE.start_main_~i~0 + 10 >= 0] [2021-08-31 01:30:52,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,443 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-08-31 01:30:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:52,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:52,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:30:52,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:52,525 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-31 01:30:52,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:52,558 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 01:30:52,558 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-08-31 01:30:52,559 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 48 transitions. cyclomatic complexity: 21 Second operand has 5 states, 5 states have (on average 1.8) 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 01:30:52,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 48 transitions. cyclomatic complexity: 21. Second operand has 5 states, 5 states have (on average 1.8) 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) Result 45 states and 67 transitions. Complement of second has 8 states. [2021-08-31 01:30:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 01:30:52,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) 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 01:30:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-08-31 01:30:52,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 4 letters. [2021-08-31 01:30:52,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:52,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 9 letters. Loop has 4 letters. [2021-08-31 01:30:52,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:52,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 8 letters. [2021-08-31 01:30:52,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:52,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 67 transitions. [2021-08-31 01:30:52,610 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 01:30:52,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 44 states and 66 transitions. [2021-08-31 01:30:52,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-08-31 01:30:52,610 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-08-31 01:30:52,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 66 transitions. [2021-08-31 01:30:52,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:52,610 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 66 transitions. [2021-08-31 01:30:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 66 transitions. [2021-08-31 01:30:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-08-31 01:30:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 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 01:30:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2021-08-31 01:30:52,613 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-08-31 01:30:52,613 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-08-31 01:30:52,613 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-31 01:30:52,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2021-08-31 01:30:52,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 01:30:52,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:52,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:52,614 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-08-31 01:30:52,614 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:52,614 INFO L791 eck$LassoCheckResult]: Stem: 394#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 395#L18-1 assume !!(main_~i~0 > 0); 411#L12 assume 1 == main_~i~0;main_~up~0 := 1; 407#L12-2 assume !(10 == main_~i~0); 406#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 405#L18-1 assume !!(main_~i~0 > 0); 402#L12 assume !(1 == main_~i~0); 403#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 428#L15-1 [2021-08-31 01:30:52,614 INFO L793 eck$LassoCheckResult]: Loop: 428#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 427#L18-1 assume !!(main_~i~0 > 0); 424#L12 assume !(1 == main_~i~0); 425#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 428#L15-1 [2021-08-31 01:30:52,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:52,614 INFO L82 PathProgramCache]: Analyzing trace with hash 612785863, now seen corresponding path program 1 times [2021-08-31 01:30:52,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:52,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397827667] [2021-08-31 01:30:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:52,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:30:52,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:52,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397827667] [2021-08-31 01:30:52,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397827667] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:30:52,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543620143] [2021-08-31 01:30:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:52,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:30:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,676 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:30:52,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-08-31 01:30:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:52,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-31 01:30:52,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:30:52,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:30:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:30:52,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543620143] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:30:52,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:30:52,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-08-31 01:30:52,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493131840] [2021-08-31 01:30:52,724 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:30:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:52,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1737972, now seen corresponding path program 2 times [2021-08-31 01:30:52,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:52,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607599245] [2021-08-31 01:30:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:52,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:52,727 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:52,729 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:52,745 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:52,745 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:52,745 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:52,745 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:52,745 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:30:52,745 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,745 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:52,745 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:52,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-08-31 01:30:52,746 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:52,746 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:52,746 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 01:30:52,749 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 01:30:52,752 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 01:30:52,753 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 01:30:52,782 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:52,782 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:30:52,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,783 INFO L229 MonitoredProcess]: Starting monitored process 40 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 01:30:52,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:52,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:52,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-08-31 01:30:52,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,821 INFO L229 MonitoredProcess]: Starting monitored process 41 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 01:30:52,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-08-31 01:30:52,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:30:52,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:52,905 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:30:52,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:52,911 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:52,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:52,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:52,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:52,911 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:30:52,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,911 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:52,911 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:52,911 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-08-31 01:30:52,911 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:52,911 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:52,912 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 01:30:52,917 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 01:30:52,921 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 01:30:52,922 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 01:30:52,958 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:52,959 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:30:52,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,960 INFO L229 MonitoredProcess]: Starting monitored process 42 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 01:30:52,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-08-31 01:30:52,962 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 01:30:52,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:52,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:52,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:52,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:52,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:52,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:30:52,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:52,984 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:30:52,985 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-31 01:30:52,985 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:30:52,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:52,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:52,986 INFO L229 MonitoredProcess]: Starting monitored process 43 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 01:30:52,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-08-31 01:30:52,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:30:52,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:30:52,988 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:30:52,988 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-31 01:30:53,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,003 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:30:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:53,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:30:53,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:53,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:30:53,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:53,045 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 01:30:53,045 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 01:30:53,045 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 63 transitions. cyclomatic complexity: 27 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 01:30:53,068 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 63 transitions. cyclomatic complexity: 27. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Result 104 states and 159 transitions. Complement of second has 7 states. [2021-08-31 01:30:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 01:30:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 01:30:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-08-31 01:30:53,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-08-31 01:30:53,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:53,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2021-08-31 01:30:53,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:53,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2021-08-31 01:30:53,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:53,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 159 transitions. [2021-08-31 01:30:53,074 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-08-31 01:30:53,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 86 states and 132 transitions. [2021-08-31 01:30:53,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-08-31 01:30:53,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-08-31 01:30:53,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 132 transitions. [2021-08-31 01:30:53,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:53,076 INFO L681 BuchiCegarLoop]: Abstraction has 86 states and 132 transitions. [2021-08-31 01:30:53,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 132 transitions. [2021-08-31 01:30:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2021-08-31 01:30:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 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 01:30:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 126 transitions. [2021-08-31 01:30:53,080 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 126 transitions. [2021-08-31 01:30:53,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:30:53,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-31 01:30:53,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-31 01:30:53,081 INFO L87 Difference]: Start difference. First operand 81 states and 126 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 01:30:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:30:53,108 INFO L93 Difference]: Finished difference Result 159 states and 238 transitions. [2021-08-31 01:30:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-31 01:30:53,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 238 transitions. [2021-08-31 01:30:53,114 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-08-31 01:30:53,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 159 states and 238 transitions. [2021-08-31 01:30:53,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 93 [2021-08-31 01:30:53,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93 [2021-08-31 01:30:53,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 238 transitions. [2021-08-31 01:30:53,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:53,116 INFO L681 BuchiCegarLoop]: Abstraction has 159 states and 238 transitions. [2021-08-31 01:30:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 238 transitions. [2021-08-31 01:30:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 135. [2021-08-31 01:30:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 135 states have (on average 1.525925925925926) internal successors, (206), 134 states have internal predecessors, (206), 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 01:30:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 206 transitions. [2021-08-31 01:30:53,123 INFO L704 BuchiCegarLoop]: Abstraction has 135 states and 206 transitions. [2021-08-31 01:30:53,123 INFO L587 BuchiCegarLoop]: Abstraction has 135 states and 206 transitions. [2021-08-31 01:30:53,123 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-08-31 01:30:53,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 135 states and 206 transitions. [2021-08-31 01:30:53,124 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2021-08-31 01:30:53,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:53,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:53,125 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-08-31 01:30:53,125 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:53,125 INFO L791 eck$LassoCheckResult]: Stem: 888#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 889#L18-1 assume !!(main_~i~0 > 0); 899#L12 assume 1 == main_~i~0;main_~up~0 := 1; 900#L12-2 assume !(10 == main_~i~0); 895#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 896#L18-1 assume !!(main_~i~0 > 0); 970#L12 assume !(1 == main_~i~0); 932#L12-2 assume !(10 == main_~i~0); 976#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 950#L18-1 [2021-08-31 01:30:53,125 INFO L793 eck$LassoCheckResult]: Loop: 950#L18-1 assume !!(main_~i~0 > 0); 960#L12 assume 1 == main_~i~0;main_~up~0 := 1; 943#L12-2 assume !(10 == main_~i~0); 955#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 950#L18-1 [2021-08-31 01:30:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:53,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1816492658, now seen corresponding path program 1 times [2021-08-31 01:30:53,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:53,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082918297] [2021-08-31 01:30:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:53,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:53,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-31 01:30:53,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:53,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082918297] [2021-08-31 01:30:53,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082918297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:30:53,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:30:53,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-31 01:30:53,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263999037] [2021-08-31 01:30:53,164 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:30:53,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:53,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-08-31 01:30:53,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:53,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128317432] [2021-08-31 01:30:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:53,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:30:53,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:53,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128317432] [2021-08-31 01:30:53,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128317432] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:30:53,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:30:53,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-31 01:30:53,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456156733] [2021-08-31 01:30:53,171 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:30:53,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:30:53,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 01:30:53,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 01:30:53,172 INFO L87 Difference]: Start difference. First operand 135 states and 206 transitions. cyclomatic complexity: 82 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 01:30:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:30:53,181 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2021-08-31 01:30:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 01:30:53,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 143 transitions. [2021-08-31 01:30:53,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2021-08-31 01:30:53,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 87 states and 111 transitions. [2021-08-31 01:30:53,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-08-31 01:30:53,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-08-31 01:30:53,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 111 transitions. [2021-08-31 01:30:53,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:53,184 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 111 transitions. [2021-08-31 01:30:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 111 transitions. [2021-08-31 01:30:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2021-08-31 01:30:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 83 states have internal predecessors, (108), 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 01:30:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 108 transitions. [2021-08-31 01:30:53,186 INFO L704 BuchiCegarLoop]: Abstraction has 84 states and 108 transitions. [2021-08-31 01:30:53,186 INFO L587 BuchiCegarLoop]: Abstraction has 84 states and 108 transitions. [2021-08-31 01:30:53,187 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-08-31 01:30:53,187 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states and 108 transitions. [2021-08-31 01:30:53,187 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-08-31 01:30:53,187 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:53,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:53,188 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 4, 2, 1, 1, 1] [2021-08-31 01:30:53,188 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:53,188 INFO L791 eck$LassoCheckResult]: Stem: 1136#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1137#L18-1 assume !!(main_~i~0 > 0); 1169#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1166#L12-2 assume !(10 == main_~i~0); 1164#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1162#L18-1 assume !!(main_~i~0 > 0); 1161#L12 assume !(1 == main_~i~0); 1160#L12-2 assume !(10 == main_~i~0); 1159#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1158#L18-1 assume !!(main_~i~0 > 0); 1157#L12 assume !(1 == main_~i~0); 1156#L12-2 assume !(10 == main_~i~0); 1155#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1154#L18-1 assume !!(main_~i~0 > 0); 1150#L12 assume !(1 == main_~i~0); 1152#L12-2 assume !(10 == main_~i~0); 1151#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1149#L18-1 assume !!(main_~i~0 > 0); 1148#L12 assume !(1 == main_~i~0); 1146#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1138#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1134#L18-1 assume !!(main_~i~0 > 0); 1135#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1128#L12-2 [2021-08-31 01:30:53,188 INFO L793 eck$LassoCheckResult]: Loop: 1128#L12-2 assume !(10 == main_~i~0); 1129#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1211#L18-1 assume !!(main_~i~0 > 0); 1139#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1128#L12-2 [2021-08-31 01:30:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:53,188 INFO L82 PathProgramCache]: Analyzing trace with hash -450362830, now seen corresponding path program 1 times [2021-08-31 01:30:53,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:53,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146310930] [2021-08-31 01:30:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:53,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-08-31 01:30:53,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:53,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146310930] [2021-08-31 01:30:53,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146310930] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:30:53,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:30:53,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 01:30:53,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058751786] [2021-08-31 01:30:53,207 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:30:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1573480, now seen corresponding path program 1 times [2021-08-31 01:30:53,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:53,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821972069] [2021-08-31 01:30:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:53,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:53,209 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:53,211 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:53,226 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:53,226 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:53,226 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:53,226 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:53,226 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:30:53,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:53,227 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:53,227 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-08-31 01:30:53,227 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:53,227 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:53,227 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 01:30:53,229 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 01:30:53,231 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 01:30:53,234 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 01:30:53,259 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:53,259 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:30:53,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,259 INFO L229 MonitoredProcess]: Starting monitored process 44 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 01:30:53,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-08-31 01:30:53,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:53,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:53,282 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:53,282 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:53,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,298 INFO L229 MonitoredProcess]: Starting monitored process 45 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 01:30:53,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-08-31 01:30:53,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:53,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:53,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-08-31 01:30:53,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,322 INFO L229 MonitoredProcess]: Starting monitored process 46 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 01:30:53,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-08-31 01:30:53,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:30:53,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:53,384 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:30:53,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,387 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:53,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:53,387 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:53,387 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:53,387 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:30:53,387 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,387 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:53,387 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:53,387 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-08-31 01:30:53,387 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:53,387 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:53,388 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 01:30:53,390 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 01:30:53,391 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 01:30:53,395 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 01:30:53,425 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:53,425 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:30:53,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,426 INFO L229 MonitoredProcess]: Starting monitored process 47 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 01:30:53,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-08-31 01:30:53,428 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 01:30:53,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:53,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:53,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:53,434 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:53,435 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:30:53,435 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:30:53,450 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:53,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,465 INFO L229 MonitoredProcess]: Starting monitored process 48 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 01:30:53,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-08-31 01:30:53,467 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 01:30:53,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:53,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:53,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:53,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:53,475 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:30:53,475 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:30:53,490 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:53,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,505 INFO L229 MonitoredProcess]: Starting monitored process 49 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 01:30:53,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-08-31 01:30:53,507 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 01:30:53,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:53,513 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:53,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:53,513 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:53,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:53,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:30:53,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:53,529 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:30:53,530 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:30:53,530 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:30:53,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,531 INFO L229 MonitoredProcess]: Starting monitored process 50 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 01:30:53,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-08-31 01:30:53,532 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:30:53,532 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:30:53,532 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:30:53,533 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 01:30:53,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,547 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:30:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:53,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:30:53,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:53,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-31 01:30:53,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:53,626 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 01:30:53,627 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 01:30:53,627 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 84 states and 108 transitions. cyclomatic complexity: 31 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:30:53,672 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 84 states and 108 transitions. cyclomatic complexity: 31. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 175 states and 218 transitions. Complement of second has 9 states. [2021-08-31 01:30:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 01:30:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:30:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-08-31 01:30:53,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 23 letters. Loop has 4 letters. [2021-08-31 01:30:53,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:53,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 27 letters. Loop has 4 letters. [2021-08-31 01:30:53,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:53,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 23 letters. Loop has 8 letters. [2021-08-31 01:30:53,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:53,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 175 states and 218 transitions. [2021-08-31 01:30:53,676 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 41 [2021-08-31 01:30:53,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 175 states to 171 states and 212 transitions. [2021-08-31 01:30:53,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-08-31 01:30:53,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-08-31 01:30:53,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 171 states and 212 transitions. [2021-08-31 01:30:53,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:53,677 INFO L681 BuchiCegarLoop]: Abstraction has 171 states and 212 transitions. [2021-08-31 01:30:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states and 212 transitions. [2021-08-31 01:30:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 157. [2021-08-31 01:30:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 157 states have (on average 1.2484076433121019) internal successors, (196), 156 states have internal predecessors, (196), 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 01:30:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 196 transitions. [2021-08-31 01:30:53,682 INFO L704 BuchiCegarLoop]: Abstraction has 157 states and 196 transitions. [2021-08-31 01:30:53,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:30:53,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-31 01:30:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-31 01:30:53,682 INFO L87 Difference]: Start difference. First operand 157 states and 196 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 01:30:53,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:30:53,696 INFO L93 Difference]: Finished difference Result 137 states and 168 transitions. [2021-08-31 01:30:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-31 01:30:53,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 137 states and 168 transitions. [2021-08-31 01:30:53,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-08-31 01:30:53,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 137 states to 132 states and 162 transitions. [2021-08-31 01:30:53,698 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-08-31 01:30:53,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-08-31 01:30:53,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 162 transitions. [2021-08-31 01:30:53,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:53,699 INFO L681 BuchiCegarLoop]: Abstraction has 132 states and 162 transitions. [2021-08-31 01:30:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states and 162 transitions. [2021-08-31 01:30:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2021-08-31 01:30:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 97 states have internal predecessors, (121), 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 01:30:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2021-08-31 01:30:53,701 INFO L704 BuchiCegarLoop]: Abstraction has 98 states and 121 transitions. [2021-08-31 01:30:53,701 INFO L587 BuchiCegarLoop]: Abstraction has 98 states and 121 transitions. [2021-08-31 01:30:53,701 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-08-31 01:30:53,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 121 transitions. [2021-08-31 01:30:53,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-08-31 01:30:53,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:53,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:53,703 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1] [2021-08-31 01:30:53,703 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-31 01:30:53,703 INFO L791 eck$LassoCheckResult]: Stem: 1794#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1795#L18-1 assume !!(main_~i~0 > 0); 1796#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1790#L12-2 assume !(10 == main_~i~0); 1792#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1806#L18-1 assume !!(main_~i~0 > 0); 1858#L12 assume !(1 == main_~i~0); 1856#L12-2 assume !(10 == main_~i~0); 1852#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1849#L18-1 assume !!(main_~i~0 > 0); 1846#L12 assume !(1 == main_~i~0); 1843#L12-2 assume !(10 == main_~i~0); 1840#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1837#L18-1 assume !!(main_~i~0 > 0); 1827#L12 assume !(1 == main_~i~0); 1832#L12-2 assume !(10 == main_~i~0); 1829#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1826#L18-1 assume !!(main_~i~0 > 0); 1825#L12 assume !(1 == main_~i~0); 1824#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1800#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1801#L18-1 assume !!(main_~i~0 > 0); 1804#L12 assume !(1 == main_~i~0); 1805#L12-2 assume !(10 == main_~i~0); 1872#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1870#L18-1 assume !!(main_~i~0 > 0); 1868#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1823#L12-2 [2021-08-31 01:30:53,703 INFO L793 eck$LassoCheckResult]: Loop: 1823#L12-2 assume !(10 == main_~i~0); 1864#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1853#L18-1 assume !!(main_~i~0 > 0); 1850#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1823#L12-2 [2021-08-31 01:30:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:53,703 INFO L82 PathProgramCache]: Analyzing trace with hash 809351837, now seen corresponding path program 2 times [2021-08-31 01:30:53,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:53,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65773836] [2021-08-31 01:30:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:53,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:53,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-31 01:30:53,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:53,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65773836] [2021-08-31 01:30:53,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65773836] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:30:53,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370272080] [2021-08-31 01:30:53,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-31 01:30:53,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:30:53,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,754 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:30:53,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-08-31 01:30:53,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-31 01:30:53,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 01:30:53,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-31 01:30:53,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-31 01:30:53,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:30:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-31 01:30:53,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370272080] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:30:53,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:30:53,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-08-31 01:30:53,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367469172] [2021-08-31 01:30:53,876 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:30:53,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:53,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1573480, now seen corresponding path program 2 times [2021-08-31 01:30:53,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:53,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917060675] [2021-08-31 01:30:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:53,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:53,879 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:53,881 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:53,908 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:53,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:53,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:53,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:53,909 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:30:53,909 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:53,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:53,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration9_Loop [2021-08-31 01:30:53,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:53,909 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:53,910 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 01:30:53,913 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 01:30:53,926 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 01:30:53,927 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 01:30:53,957 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:53,957 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:30:53,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,960 INFO L229 MonitoredProcess]: Starting monitored process 52 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 01:30:53,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-08-31 01:30:53,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:53,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:53,970 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:30:53,970 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:30:53,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:53,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:53,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:53,987 INFO L229 MonitoredProcess]: Starting monitored process 53 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 01:30:53,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-08-31 01:30:53,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:30:53,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:54,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-08-31 01:30:54,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:54,011 INFO L229 MonitoredProcess]: Starting monitored process 54 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 01:30:54,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-08-31 01:30:54,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:30:54,013 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:30:54,082 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:30:54,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-08-31 01:30:54,085 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:30:54,085 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:30:54,085 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:30:54,085 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:30:54,085 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:30:54,085 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:54,085 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:30:54,085 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:30:54,085 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration9_Loop [2021-08-31 01:30:54,085 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:30:54,085 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:30:54,086 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 01:30:54,090 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 01:30:54,093 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 01:30:54,094 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 01:30:54,128 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:30:54,128 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:30:54,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:54,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:54,129 INFO L229 MonitoredProcess]: Starting monitored process 55 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 01:30:54,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-08-31 01:30:54,130 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 01:30:54,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:54,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:54,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:54,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:54,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:54,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:30:54,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:54,152 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:30:54,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:54,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:54,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:54,167 INFO L229 MonitoredProcess]: Starting monitored process 56 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 01:30:54,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-08-31 01:30:54,169 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 01:30:54,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:30:54,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:30:54,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:30:54,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:30:54,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:30:54,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:30:54,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:30:54,191 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:30:54,193 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:30:54,193 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:30:54,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:30:54,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:54,194 INFO L229 MonitoredProcess]: Starting monitored process 57 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 01:30:54,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-08-31 01:30:54,195 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:30:54,195 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:30:54,195 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:30:54,195 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 01:30:54,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:54,211 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:30:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:30:54,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-31 01:30:54,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:54,295 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 01:30:54,296 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 01:30:54,296 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 98 states and 121 transitions. cyclomatic complexity: 32 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:30:54,326 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 98 states and 121 transitions. cyclomatic complexity: 32. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 173 states and 206 transitions. Complement of second has 9 states. [2021-08-31 01:30:54,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 01:30:54,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:30:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-08-31 01:30:54,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 27 letters. Loop has 4 letters. [2021-08-31 01:30:54,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:54,327 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 01:30:54,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:30:54,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-31 01:30:54,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:54,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:54,413 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 01:30:54,414 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 01:30:54,414 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 98 states and 121 transitions. cyclomatic complexity: 32 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:30:54,439 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 98 states and 121 transitions. cyclomatic complexity: 32. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 173 states and 206 transitions. Complement of second has 9 states. [2021-08-31 01:30:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 01:30:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:30:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-08-31 01:30:54,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 27 letters. Loop has 4 letters. [2021-08-31 01:30:54,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:54,441 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 01:30:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:30:54,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-31 01:30:54,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:54,511 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 01:30:54,512 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 3 loop predicates [2021-08-31 01:30:54,512 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 98 states and 121 transitions. cyclomatic complexity: 32 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:30:54,552 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 98 states and 121 transitions. cyclomatic complexity: 32. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 190 states and 226 transitions. Complement of second has 8 states. [2021-08-31 01:30:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 01:30:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 01:30:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-08-31 01:30:54,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 27 letters. Loop has 4 letters. [2021-08-31 01:30:54,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:54,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 31 letters. Loop has 4 letters. [2021-08-31 01:30:54,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:54,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 27 letters. Loop has 8 letters. [2021-08-31 01:30:54,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:30:54,554 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 190 states and 226 transitions. [2021-08-31 01:30:54,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-08-31 01:30:54,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 190 states to 130 states and 157 transitions. [2021-08-31 01:30:54,556 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-08-31 01:30:54,556 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-08-31 01:30:54,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 157 transitions. [2021-08-31 01:30:54,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:54,557 INFO L681 BuchiCegarLoop]: Abstraction has 130 states and 157 transitions. [2021-08-31 01:30:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states and 157 transitions. [2021-08-31 01:30:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 103. [2021-08-31 01:30:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 103 states have (on average 1.2135922330097086) internal successors, (125), 102 states have internal predecessors, (125), 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 01:30:54,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 125 transitions. [2021-08-31 01:30:54,559 INFO L704 BuchiCegarLoop]: Abstraction has 103 states and 125 transitions. [2021-08-31 01:30:54,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:30:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-31 01:30:54,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-31 01:30:54,560 INFO L87 Difference]: Start difference. First operand 103 states and 125 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 01:30:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:30:54,599 INFO L93 Difference]: Finished difference Result 289 states and 335 transitions. [2021-08-31 01:30:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-31 01:30:54,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 289 states and 335 transitions. [2021-08-31 01:30:54,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2021-08-31 01:30:54,602 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 289 states to 269 states and 315 transitions. [2021-08-31 01:30:54,602 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 60 [2021-08-31 01:30:54,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-08-31 01:30:54,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 269 states and 315 transitions. [2021-08-31 01:30:54,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:54,602 INFO L681 BuchiCegarLoop]: Abstraction has 269 states and 315 transitions. [2021-08-31 01:30:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states and 315 transitions. [2021-08-31 01:30:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 163. [2021-08-31 01:30:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 163 states have (on average 1.1349693251533743) internal successors, (185), 162 states have internal predecessors, (185), 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 01:30:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 185 transitions. [2021-08-31 01:30:54,605 INFO L704 BuchiCegarLoop]: Abstraction has 163 states and 185 transitions. [2021-08-31 01:30:54,605 INFO L587 BuchiCegarLoop]: Abstraction has 163 states and 185 transitions. [2021-08-31 01:30:54,605 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-08-31 01:30:54,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 185 transitions. [2021-08-31 01:30:54,606 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-08-31 01:30:54,606 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:54,606 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:54,607 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [12, 10, 10, 9, 2, 2, 1, 1] [2021-08-31 01:30:54,607 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2021-08-31 01:30:54,608 INFO L791 eck$LassoCheckResult]: Stem: 3320#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3321#L18-1 assume !!(main_~i~0 > 0); 3427#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3424#L12-2 assume !(10 == main_~i~0); 3329#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3316#L18-1 assume !!(main_~i~0 > 0); 3317#L12 assume !(1 == main_~i~0); 3469#L12-2 assume !(10 == main_~i~0); 3468#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3467#L18-1 assume !!(main_~i~0 > 0); 3466#L12 assume !(1 == main_~i~0); 3465#L12-2 assume !(10 == main_~i~0); 3464#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3463#L18-1 assume !!(main_~i~0 > 0); 3462#L12 assume !(1 == main_~i~0); 3461#L12-2 assume !(10 == main_~i~0); 3460#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3459#L18-1 assume !!(main_~i~0 > 0); 3458#L12 assume !(1 == main_~i~0); 3457#L12-2 assume !(10 == main_~i~0); 3456#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3455#L18-1 assume !!(main_~i~0 > 0); 3454#L12 assume !(1 == main_~i~0); 3453#L12-2 assume !(10 == main_~i~0); 3452#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3451#L18-1 assume !!(main_~i~0 > 0); 3450#L12 assume !(1 == main_~i~0); 3449#L12-2 assume !(10 == main_~i~0); 3448#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3447#L18-1 assume !!(main_~i~0 > 0); 3446#L12 assume !(1 == main_~i~0); 3445#L12-2 assume !(10 == main_~i~0); 3444#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3443#L18-1 assume !!(main_~i~0 > 0); 3352#L12 assume !(1 == main_~i~0); 3441#L12-2 assume !(10 == main_~i~0); 3354#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3351#L18-1 assume !!(main_~i~0 > 0); 3349#L12 assume !(1 == main_~i~0); 3347#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3322#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3323#L18-1 assume !!(main_~i~0 > 0); 3392#L12 assume !(1 == main_~i~0); 3387#L12-2 assume !(10 == main_~i~0); 3390#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3389#L18-1 assume !!(main_~i~0 > 0); 3386#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3384#L12-2 [2021-08-31 01:30:54,608 INFO L793 eck$LassoCheckResult]: Loop: 3384#L12-2 assume !(10 == main_~i~0); 3382#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3381#L18-1 assume !!(main_~i~0 > 0); 3380#L12 assume !(1 == main_~i~0); 3379#L12-2 assume !(10 == main_~i~0); 3378#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3377#L18-1 assume !!(main_~i~0 > 0); 3376#L12 assume !(1 == main_~i~0); 3375#L12-2 assume !(10 == main_~i~0); 3374#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3373#L18-1 assume !!(main_~i~0 > 0); 3372#L12 assume !(1 == main_~i~0); 3371#L12-2 assume !(10 == main_~i~0); 3370#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3369#L18-1 assume !!(main_~i~0 > 0); 3368#L12 assume !(1 == main_~i~0); 3367#L12-2 assume !(10 == main_~i~0); 3366#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3365#L18-1 assume !!(main_~i~0 > 0); 3364#L12 assume !(1 == main_~i~0); 3363#L12-2 assume !(10 == main_~i~0); 3362#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3361#L18-1 assume !!(main_~i~0 > 0); 3360#L12 assume !(1 == main_~i~0); 3359#L12-2 assume !(10 == main_~i~0); 3358#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3357#L18-1 assume !!(main_~i~0 > 0); 3356#L12 assume !(1 == main_~i~0); 3355#L12-2 assume !(10 == main_~i~0); 3353#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3350#L18-1 assume !!(main_~i~0 > 0); 3348#L12 assume !(1 == main_~i~0); 3345#L12-2 assume !(10 == main_~i~0); 3343#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3340#L18-1 assume !!(main_~i~0 > 0); 3341#L12 assume !(1 == main_~i~0); 3346#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3333#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3388#L18-1 assume !!(main_~i~0 > 0); 3335#L12 assume !(1 == main_~i~0); 3334#L12-2 assume !(10 == main_~i~0); 3330#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3331#L18-1 assume !!(main_~i~0 > 0); 3337#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3384#L12-2 [2021-08-31 01:30:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:54,608 INFO L82 PathProgramCache]: Analyzing trace with hash -742650454, now seen corresponding path program 3 times [2021-08-31 01:30:54,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:54,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325514940] [2021-08-31 01:30:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:54,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-08-31 01:30:54,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:54,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325514940] [2021-08-31 01:30:54,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325514940] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:30:54,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958502092] [2021-08-31 01:30:54,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-31 01:30:54,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:30:54,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:54,657 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:30:54,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-08-31 01:30:54,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-31 01:30:54,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 01:30:54,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:30:54,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-08-31 01:30:54,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:30:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-08-31 01:30:54,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958502092] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:30:54,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:30:54,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-31 01:30:54,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552045956] [2021-08-31 01:30:54,795 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:30:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:54,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1505583288, now seen corresponding path program 1 times [2021-08-31 01:30:54,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:54,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779238388] [2021-08-31 01:30:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:54,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-08-31 01:30:54,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:54,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779238388] [2021-08-31 01:30:54,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779238388] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:30:54,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974696138] [2021-08-31 01:30:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:54,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:30:54,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:54,824 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:30:54,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-08-31 01:30:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:54,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:30:54,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-08-31 01:30:54,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:30:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-08-31 01:30:54,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974696138] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:30:54,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:30:54,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-31 01:30:54,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054545282] [2021-08-31 01:30:54,963 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:30:54,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:30:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-31 01:30:54,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-31 01:30:54,963 INFO L87 Difference]: Start difference. First operand 163 states and 185 transitions. cyclomatic complexity: 31 Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 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 01:30:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:30:54,988 INFO L93 Difference]: Finished difference Result 236 states and 273 transitions. [2021-08-31 01:30:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-31 01:30:54,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 236 states and 273 transitions. [2021-08-31 01:30:54,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 67 [2021-08-31 01:30:54,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 236 states to 236 states and 273 transitions. [2021-08-31 01:30:54,991 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-08-31 01:30:54,991 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-08-31 01:30:54,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 236 states and 273 transitions. [2021-08-31 01:30:54,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:54,991 INFO L681 BuchiCegarLoop]: Abstraction has 236 states and 273 transitions. [2021-08-31 01:30:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states and 273 transitions. [2021-08-31 01:30:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 211. [2021-08-31 01:30:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 211 states have (on average 1.1421800947867298) internal successors, (241), 210 states have internal predecessors, (241), 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 01:30:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2021-08-31 01:30:54,994 INFO L704 BuchiCegarLoop]: Abstraction has 211 states and 241 transitions. [2021-08-31 01:30:54,994 INFO L587 BuchiCegarLoop]: Abstraction has 211 states and 241 transitions. [2021-08-31 01:30:54,994 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-08-31 01:30:54,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 211 states and 241 transitions. [2021-08-31 01:30:54,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2021-08-31 01:30:54,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:54,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:54,996 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [16, 14, 14, 9, 6, 2, 1, 1] [2021-08-31 01:30:54,997 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 9, 6, 1, 1] [2021-08-31 01:30:54,997 INFO L791 eck$LassoCheckResult]: Stem: 4271#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4272#L18-1 assume !!(main_~i~0 > 0); 4325#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4322#L12-2 assume !(10 == main_~i~0); 4320#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4318#L18-1 assume !!(main_~i~0 > 0); 4317#L12 assume !(1 == main_~i~0); 4316#L12-2 assume !(10 == main_~i~0); 4315#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4314#L18-1 assume !!(main_~i~0 > 0); 4313#L12 assume !(1 == main_~i~0); 4312#L12-2 assume !(10 == main_~i~0); 4311#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4310#L18-1 assume !!(main_~i~0 > 0); 4309#L12 assume !(1 == main_~i~0); 4308#L12-2 assume !(10 == main_~i~0); 4307#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4306#L18-1 assume !!(main_~i~0 > 0); 4305#L12 assume !(1 == main_~i~0); 4304#L12-2 assume !(10 == main_~i~0); 4303#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4302#L18-1 assume !!(main_~i~0 > 0); 4301#L12 assume !(1 == main_~i~0); 4300#L12-2 assume !(10 == main_~i~0); 4299#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4298#L18-1 assume !!(main_~i~0 > 0); 4297#L12 assume !(1 == main_~i~0); 4296#L12-2 assume !(10 == main_~i~0); 4295#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4294#L18-1 assume !!(main_~i~0 > 0); 4293#L12 assume !(1 == main_~i~0); 4292#L12-2 assume !(10 == main_~i~0); 4291#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4290#L18-1 assume !!(main_~i~0 > 0); 4287#L12 assume !(1 == main_~i~0); 4289#L12-2 assume !(10 == main_~i~0); 4288#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4286#L18-1 assume !!(main_~i~0 > 0); 4285#L12 assume !(1 == main_~i~0); 4284#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4273#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4274#L18-1 assume !!(main_~i~0 > 0); 4469#L12 assume !(1 == main_~i~0); 4264#L12-2 assume !(10 == main_~i~0); 4266#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4471#L18-1 assume !!(main_~i~0 > 0); 4470#L12 assume !(1 == main_~i~0); 4468#L12-2 assume !(10 == main_~i~0); 4467#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4466#L18-1 assume !!(main_~i~0 > 0); 4465#L12 assume !(1 == main_~i~0); 4464#L12-2 assume !(10 == main_~i~0); 4463#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4462#L18-1 assume !!(main_~i~0 > 0); 4461#L12 assume !(1 == main_~i~0); 4460#L12-2 assume !(10 == main_~i~0); 4459#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4458#L18-1 assume !!(main_~i~0 > 0); 4457#L12 assume !(1 == main_~i~0); 4409#L12-2 assume !(10 == main_~i~0); 4417#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4414#L18-1 assume !!(main_~i~0 > 0); 4408#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4405#L12-2 [2021-08-31 01:30:54,997 INFO L793 eck$LassoCheckResult]: Loop: 4405#L12-2 assume !(10 == main_~i~0); 4402#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4400#L18-1 assume !!(main_~i~0 > 0); 4398#L12 assume !(1 == main_~i~0); 4396#L12-2 assume !(10 == main_~i~0); 4394#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4392#L18-1 assume !!(main_~i~0 > 0); 4390#L12 assume !(1 == main_~i~0); 4388#L12-2 assume !(10 == main_~i~0); 4386#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4384#L18-1 assume !!(main_~i~0 > 0); 4382#L12 assume !(1 == main_~i~0); 4380#L12-2 assume !(10 == main_~i~0); 4378#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4376#L18-1 assume !!(main_~i~0 > 0); 4374#L12 assume !(1 == main_~i~0); 4372#L12-2 assume !(10 == main_~i~0); 4370#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4368#L18-1 assume !!(main_~i~0 > 0); 4366#L12 assume !(1 == main_~i~0); 4364#L12-2 assume !(10 == main_~i~0); 4362#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4360#L18-1 assume !!(main_~i~0 > 0); 4358#L12 assume !(1 == main_~i~0); 4356#L12-2 assume !(10 == main_~i~0); 4354#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4352#L18-1 assume !!(main_~i~0 > 0); 4350#L12 assume !(1 == main_~i~0); 4348#L12-2 assume !(10 == main_~i~0); 4346#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4344#L18-1 assume !!(main_~i~0 > 0); 4343#L12 assume !(1 == main_~i~0); 4341#L12-2 assume !(10 == main_~i~0); 4339#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4335#L18-1 assume !!(main_~i~0 > 0); 4333#L12 assume !(1 == main_~i~0); 4334#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4282#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4439#L18-1 assume !!(main_~i~0 > 0); 4438#L12 assume !(1 == main_~i~0); 4283#L12-2 assume !(10 == main_~i~0); 4280#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4267#L18-1 assume !!(main_~i~0 > 0); 4268#L12 assume !(1 == main_~i~0); 4437#L12-2 assume !(10 == main_~i~0); 4436#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4435#L18-1 assume !!(main_~i~0 > 0); 4434#L12 assume !(1 == main_~i~0); 4433#L12-2 assume !(10 == main_~i~0); 4432#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4431#L18-1 assume !!(main_~i~0 > 0); 4430#L12 assume !(1 == main_~i~0); 4429#L12-2 assume !(10 == main_~i~0); 4428#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4427#L18-1 assume !!(main_~i~0 > 0); 4426#L12 assume !(1 == main_~i~0); 4407#L12-2 assume !(10 == main_~i~0); 4420#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4419#L18-1 assume !!(main_~i~0 > 0); 4406#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4405#L12-2 [2021-08-31 01:30:54,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:54,997 INFO L82 PathProgramCache]: Analyzing trace with hash 836169302, now seen corresponding path program 4 times [2021-08-31 01:30:54,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:54,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172696734] [2021-08-31 01:30:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:54,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 224 proven. 55 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-08-31 01:30:55,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:55,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172696734] [2021-08-31 01:30:55,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172696734] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:30:55,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966078532] [2021-08-31 01:30:55,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-31 01:30:55,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:30:55,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:55,041 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:30:55,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-08-31 01:30:55,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-31 01:30:55,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 01:30:55,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 01:30:55,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 224 proven. 55 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-08-31 01:30:55,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:30:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 224 proven. 55 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-08-31 01:30:55,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966078532] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:30:55,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:30:55,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2021-08-31 01:30:55,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858261266] [2021-08-31 01:30:55,227 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:30:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:55,227 INFO L82 PathProgramCache]: Analyzing trace with hash 938640372, now seen corresponding path program 2 times [2021-08-31 01:30:55,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:55,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374774336] [2021-08-31 01:30:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:55,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:30:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 212 proven. 55 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-08-31 01:30:55,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:30:55,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374774336] [2021-08-31 01:30:55,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374774336] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:30:55,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891768891] [2021-08-31 01:30:55,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-31 01:30:55,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:30:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:30:55,283 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:30:55,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-08-31 01:30:55,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-31 01:30:55,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 01:30:55,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 01:30:55,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:30:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 212 proven. 55 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-08-31 01:30:55,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:30:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 212 proven. 55 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-08-31 01:30:55,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891768891] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:30:55,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:30:55,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2021-08-31 01:30:55,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220887797] [2021-08-31 01:30:55,501 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:30:55,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:30:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-31 01:30:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-31 01:30:55,501 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. cyclomatic complexity: 39 Second operand has 11 states, 10 states have (on average 3.8) internal successors, (38), 11 states have internal predecessors, (38), 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 01:30:55,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:30:55,539 INFO L93 Difference]: Finished difference Result 284 states and 330 transitions. [2021-08-31 01:30:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-31 01:30:55,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 284 states and 330 transitions. [2021-08-31 01:30:55,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-08-31 01:30:55,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 284 states to 284 states and 330 transitions. [2021-08-31 01:30:55,542 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2021-08-31 01:30:55,542 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 89 [2021-08-31 01:30:55,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 284 states and 330 transitions. [2021-08-31 01:30:55,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:30:55,542 INFO L681 BuchiCegarLoop]: Abstraction has 284 states and 330 transitions. [2021-08-31 01:30:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states and 330 transitions. [2021-08-31 01:30:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 247. [2021-08-31 01:30:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 247 states have (on average 1.145748987854251) internal successors, (283), 246 states have internal predecessors, (283), 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 01:30:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 283 transitions. [2021-08-31 01:30:55,545 INFO L704 BuchiCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-08-31 01:30:55,545 INFO L587 BuchiCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-08-31 01:30:55,545 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-08-31 01:30:55,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 283 transitions. [2021-08-31 01:30:55,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-08-31 01:30:55,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:30:55,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:30:55,547 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [19, 17, 17, 9, 9, 2, 1, 1] [2021-08-31 01:30:55,547 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 9, 9, 1, 1] [2021-08-31 01:30:55,548 INFO L791 eck$LassoCheckResult]: Stem: 5511#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5512#L18-1 assume !!(main_~i~0 > 0); 5570#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5567#L12-2 assume !(10 == main_~i~0); 5565#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5563#L18-1 assume !!(main_~i~0 > 0); 5562#L12 assume !(1 == main_~i~0); 5561#L12-2 assume !(10 == main_~i~0); 5560#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5559#L18-1 assume !!(main_~i~0 > 0); 5558#L12 assume !(1 == main_~i~0); 5557#L12-2 assume !(10 == main_~i~0); 5556#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5555#L18-1 assume !!(main_~i~0 > 0); 5554#L12 assume !(1 == main_~i~0); 5553#L12-2 assume !(10 == main_~i~0); 5552#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5551#L18-1 assume !!(main_~i~0 > 0); 5550#L12 assume !(1 == main_~i~0); 5549#L12-2 assume !(10 == main_~i~0); 5548#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5547#L18-1 assume !!(main_~i~0 > 0); 5546#L12 assume !(1 == main_~i~0); 5545#L12-2 assume !(10 == main_~i~0); 5544#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5543#L18-1 assume !!(main_~i~0 > 0); 5542#L12 assume !(1 == main_~i~0); 5541#L12-2 assume !(10 == main_~i~0); 5540#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5539#L18-1 assume !!(main_~i~0 > 0); 5538#L12 assume !(1 == main_~i~0); 5537#L12-2 assume !(10 == main_~i~0); 5536#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5535#L18-1 assume !!(main_~i~0 > 0); 5532#L12 assume !(1 == main_~i~0); 5534#L12-2 assume !(10 == main_~i~0); 5533#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5531#L18-1 assume !!(main_~i~0 > 0); 5530#L12 assume !(1 == main_~i~0); 5529#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5517#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5518#L18-1 assume !!(main_~i~0 > 0); 5749#L12 assume !(1 == main_~i~0); 5508#L12-2 assume !(10 == main_~i~0); 5510#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5751#L18-1 assume !!(main_~i~0 > 0); 5750#L12 assume !(1 == main_~i~0); 5748#L12-2 assume !(10 == main_~i~0); 5747#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5746#L18-1 assume !!(main_~i~0 > 0); 5745#L12 assume !(1 == main_~i~0); 5744#L12-2 assume !(10 == main_~i~0); 5743#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5742#L18-1 assume !!(main_~i~0 > 0); 5741#L12 assume !(1 == main_~i~0); 5740#L12-2 assume !(10 == main_~i~0); 5739#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5738#L18-1 assume !!(main_~i~0 > 0); 5737#L12 assume !(1 == main_~i~0); 5736#L12-2 assume !(10 == main_~i~0); 5735#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5734#L18-1 assume !!(main_~i~0 > 0); 5733#L12 assume !(1 == main_~i~0); 5732#L12-2 assume !(10 == main_~i~0); 5731#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5730#L18-1 assume !!(main_~i~0 > 0); 5729#L12 assume !(1 == main_~i~0); 5728#L12-2 assume !(10 == main_~i~0); 5727#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5726#L18-1 assume !!(main_~i~0 > 0); 5725#L12 assume !(1 == main_~i~0); 5661#L12-2 assume !(10 == main_~i~0); 5668#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5667#L18-1 assume !!(main_~i~0 > 0); 5660#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5652#L12-2 [2021-08-31 01:30:55,548 INFO L793 eck$LassoCheckResult]: Loop: 5652#L12-2 assume !(10 == main_~i~0); 5649#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5647#L18-1 assume !!(main_~i~0 > 0); 5645#L12 assume !(1 == main_~i~0); 5643#L12-2 assume !(10 == main_~i~0); 5641#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5639#L18-1 assume !!(main_~i~0 > 0); 5637#L12 assume !(1 == main_~i~0); 5635#L12-2 assume !(10 == main_~i~0); 5633#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5631#L18-1 assume !!(main_~i~0 > 0); 5629#L12 assume !(1 == main_~i~0); 5627#L12-2 assume !(10 == main_~i~0); 5625#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5623#L18-1 assume !!(main_~i~0 > 0); 5621#L12 assume !(1 == main_~i~0); 5619#L12-2 assume !(10 == main_~i~0); 5617#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5615#L18-1 assume !!(main_~i~0 > 0); 5613#L12 assume !(1 == main_~i~0); 5611#L12-2 assume !(10 == main_~i~0); 5609#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5607#L18-1 assume !!(main_~i~0 > 0); 5605#L12 assume !(1 == main_~i~0); 5603#L12-2 assume !(10 == main_~i~0); 5601#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5599#L18-1 assume !!(main_~i~0 > 0); 5597#L12 assume !(1 == main_~i~0); 5595#L12-2 assume !(10 == main_~i~0); 5593#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5591#L18-1 assume !!(main_~i~0 > 0); 5590#L12 assume !(1 == main_~i~0); 5588#L12-2 assume !(10 == main_~i~0); 5586#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5582#L18-1 assume !!(main_~i~0 > 0); 5580#L12 assume !(1 == main_~i~0); 5581#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5527#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5513#L18-1 assume !!(main_~i~0 > 0); 5514#L12 assume !(1 == main_~i~0); 5528#L12-2 assume !(10 == main_~i~0); 5524#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5525#L18-1 assume !!(main_~i~0 > 0); 5578#L12 assume !(1 == main_~i~0); 5579#L12-2 assume !(10 == main_~i~0); 5724#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5723#L18-1 assume !!(main_~i~0 > 0); 5722#L12 assume !(1 == main_~i~0); 5721#L12-2 assume !(10 == main_~i~0); 5720#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5719#L18-1 assume !!(main_~i~0 > 0); 5718#L12 assume !(1 == main_~i~0); 5717#L12-2 assume !(10 == main_~i~0); 5716#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5715#L18-1 assume !!(main_~i~0 > 0); 5714#L12 assume !(1 == main_~i~0); 5713#L12-2 assume !(10 == main_~i~0); 5712#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5711#L18-1 assume !!(main_~i~0 > 0); 5710#L12 assume !(1 == main_~i~0); 5709#L12-2 assume !(10 == main_~i~0); 5708#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5707#L18-1 assume !!(main_~i~0 > 0); 5706#L12 assume !(1 == main_~i~0); 5705#L12-2 assume !(10 == main_~i~0); 5704#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5703#L18-1 assume !!(main_~i~0 > 0); 5702#L12 assume !(1 == main_~i~0); 5663#L12-2 assume !(10 == main_~i~0); 5669#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5665#L18-1 assume !!(main_~i~0 > 0); 5662#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5652#L12-2 [2021-08-31 01:30:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:55,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1439876841, now seen corresponding path program 5 times [2021-08-31 01:30:55,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:55,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775761825] [2021-08-31 01:30:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:55,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:55,554 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:55,561 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:55,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:55,562 INFO L82 PathProgramCache]: Analyzing trace with hash -680570443, now seen corresponding path program 3 times [2021-08-31 01:30:55,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:55,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023489716] [2021-08-31 01:30:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:55,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:55,567 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:55,578 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:30:55,578 INFO L82 PathProgramCache]: Analyzing trace with hash -569285429, now seen corresponding path program 6 times [2021-08-31 01:30:55,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:30:55,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292044195] [2021-08-31 01:30:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:30:55,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:30:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:55,587 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:30:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:30:55,597 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:30:56,026 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 01:30:56,028 INFO L158 Benchmark]: Toolchain (without parser) took 6936.58ms. Allocated memory was 52.4MB in the beginning and 88.1MB in the end (delta: 35.7MB). Free memory was 30.5MB in the beginning and 48.8MB in the end (delta: -18.3MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2021-08-31 01:30:56,029 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 33.9MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:30:56,029 INFO L158 Benchmark]: CACSL2BoogieTranslator took 128.87ms. Allocated memory is still 52.4MB. Free memory was 30.3MB in the beginning and 33.4MB in the end (delta: -3.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-08-31 01:30:56,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.60ms. Allocated memory is still 52.4MB. Free memory was 33.4MB in the beginning and 32.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:30:56,029 INFO L158 Benchmark]: Boogie Preprocessor took 9.84ms. Allocated memory is still 52.4MB. Free memory was 32.1MB in the beginning and 31.2MB in the end (delta: 934.4kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-31 01:30:56,029 INFO L158 Benchmark]: RCFGBuilder took 155.92ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 31.2MB in the beginning and 51.4MB in the end (delta: -20.2MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-08-31 01:30:56,030 INFO L158 Benchmark]: BuchiAutomizer took 6621.73ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 51.4MB in the beginning and 48.8MB in the end (delta: 2.6MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2021-08-31 01:30:56,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 33.9MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 128.87ms. Allocated memory is still 52.4MB. Free memory was 30.3MB in the beginning and 33.4MB in the end (delta: -3.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.60ms. Allocated memory is still 52.4MB. Free memory was 33.4MB in the beginning and 32.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 9.84ms. Allocated memory is still 52.4MB. Free memory was 32.1MB in the beginning and 31.2MB in the end (delta: 934.4kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 155.92ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 31.2MB in the beginning and 51.4MB in the end (delta: -20.2MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 6621.73ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 51.4MB in the beginning and 48.8MB in the end (delta: 2.6MB). Peak memory consumption was 46.0MB. 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 14 terminating modules (8 trivial, 5 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 21 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One nondeterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. 8 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 247 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 01:30:56,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:56,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:56,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-08-31 01:30:56,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:56,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:57,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-08-31 01:30:57,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...