./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/NO_22.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/NO_22.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 4e32f3b75457895ed6b80ddc53a00ac44a497e1b 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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 01:31:34,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 01:31:34,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 01:31:34,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 01:31:34,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 01:31:34,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 01:31:34,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 01:31:34,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 01:31:34,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 01:31:34,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 01:31:34,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 01:31:34,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 01:31:34,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 01:31:34,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 01:31:34,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 01:31:34,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 01:31:34,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 01:31:34,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 01:31:34,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 01:31:34,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 01:31:34,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 01:31:34,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 01:31:34,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 01:31:34,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 01:31:34,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 01:31:34,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 01:31:34,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 01:31:34,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 01:31:34,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 01:31:34,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 01:31:34,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 01:31:34,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 01:31:34,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 01:31:34,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 01:31:34,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 01:31:34,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 01:31:34,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 01:31:34,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 01:31:34,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 01:31:34,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 01:31:34,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 01:31:34,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-31 01:31:34,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 01:31:34,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 01:31:34,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 01:31:34,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 01:31:34,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 01:31:34,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 01:31:34,422 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 01:31:34,422 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 01:31:34,422 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 01:31:34,423 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 01:31:34,423 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 01:31:34,423 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 01:31:34,423 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 01:31:34,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 01:31:34,423 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 01:31:34,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 01:31:34,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 01:31:34,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 01:31:34,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 01:31:34,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 01:31:34,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 01:31:34,424 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 01:31:34,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 01:31:34,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 01:31:34,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 01:31:34,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 01:31:34,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 01:31:34,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 01:31:34,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 01:31:34,434 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 01:31:34,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e32f3b75457895ed6b80ddc53a00ac44a497e1b [2021-08-31 01:31:34,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 01:31:34,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 01:31:34,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 01:31:34,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 01:31:34,737 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 01:31:34,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_22.c [2021-08-31 01:31:34,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b61a3dad2/7fb7db4dc5bf4482acfc98c443f9f73c/FLAG5b5af76bb [2021-08-31 01:31:35,100 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 01:31:35,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_22.c [2021-08-31 01:31:35,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b61a3dad2/7fb7db4dc5bf4482acfc98c443f9f73c/FLAG5b5af76bb [2021-08-31 01:31:35,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b61a3dad2/7fb7db4dc5bf4482acfc98c443f9f73c [2021-08-31 01:31:35,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 01:31:35,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 01:31:35,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 01:31:35,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 01:31:35,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 01:31:35,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589834dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35, skipping insertion in model container [2021-08-31 01:31:35,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 01:31:35,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 01:31:35,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:31:35,253 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 01:31:35,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:31:35,270 INFO L208 MainTranslator]: Completed translation [2021-08-31 01:31:35,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35 WrapperNode [2021-08-31 01:31:35,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 01:31:35,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 01:31:35,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 01:31:35,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 01:31:35,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 01:31:35,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 01:31:35,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 01:31:35,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 01:31:35,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 01:31:35,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 01:31:35,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 01:31:35,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 01:31:35,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (1/1) ... [2021-08-31 01:31:35,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:35,382 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 01:31:35,401 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 01:31:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 01:31:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 01:31:35,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 01:31:35,488 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-31 01:31:35,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:31:35 BoogieIcfgContainer [2021-08-31 01:31:35,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 01:31:35,490 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 01:31:35,491 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 01:31:35,492 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 01:31:35,493 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:31:35,493 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 01:31:35" (1/3) ... [2021-08-31 01:31:35,494 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7240b64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:31:35, skipping insertion in model container [2021-08-31 01:31:35,494 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:31:35,494 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:35" (2/3) ... [2021-08-31 01:31:35,494 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7240b64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:31:35, skipping insertion in model container [2021-08-31 01:31:35,495 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:31:35,495 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:31:35" (3/3) ... [2021-08-31 01:31:35,496 INFO L389 chiAutomizerObserver]: Analyzing ICFG NO_22.c [2021-08-31 01:31:35,538 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 01:31:35,538 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 01:31:35,538 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 01:31:35,538 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 01:31:35,538 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 01:31:35,538 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 01:31:35,539 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 01:31:35,539 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 01:31:35,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 01:31:35,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-31 01:31:35,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:35,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:35,564 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:31:35,564 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-31 01:31:35,564 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 01:31:35,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 01:31:35,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-31 01:31:35,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:35,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:35,567 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:31:35,567 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-31 01:31:35,571 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 4#L10-2true [2021-08-31 01:31:35,572 INFO L793 eck$LassoCheckResult]: Loop: 4#L10-2true assume !!(main_~i~0 < 100); 6#L10true assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 4#L10-2true [2021-08-31 01:31:35,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,580 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-31 01:31:35,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431769870] [2021-08-31 01:31:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,635 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,655 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:35,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-08-31 01:31:35,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377253079] [2021-08-31 01:31:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,673 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,676 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,677 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-08-31 01:31:35,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223634812] [2021-08-31 01:31:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,691 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,699 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:35,790 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:35,790 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:35,790 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:35,791 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:35,791 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:31:35,791 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:35,791 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:35,791 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:35,791 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2021-08-31 01:31:35,791 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:35,791 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:35,814 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 01:31:35,836 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 01:31:35,839 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 01:31:35,883 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:35,883 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:31:35,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:35,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:35,886 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 01:31:35,887 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 01:31:35,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:35,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:35,909 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:31:35,910 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 01:31:35,928 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 01:31:35,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:35,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:35,929 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 01:31:35,939 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 01:31:35,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:35,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:35,952 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:31:35,952 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 01:31:35,967 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 01:31:35,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:35,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:35,970 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 01:31:35,970 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 01:31:35,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:35,974 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:35,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-08-31 01:31:35,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,000 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 01:31:36,001 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 01:31:36,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:31:36,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:36,031 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:31:36,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-08-31 01:31:36,040 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:36,040 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:36,040 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:36,040 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:36,040 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:31:36,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:36,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:36,041 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2021-08-31 01:31:36,041 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:36,041 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:36,044 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 01:31:36,047 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 01:31:36,056 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 01:31:36,085 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:36,088 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:31:36,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,090 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 01:31:36,091 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 01:31:36,092 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 01:31:36,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:31:36,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:31:36,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:31:36,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:31:36,103 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:31:36,103 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:31:36,119 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:31:36,137 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 01:31:36,137 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,138 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 01:31:36,139 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 01:31:36,140 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 01:31:36,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:31:36,146 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:31:36,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:31:36,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:31:36,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:31:36,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:31:36,148 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:31:36,163 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:31:36,166 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:31:36,166 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:31:36,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,168 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 01:31:36,169 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 01:31:36,170 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:31:36,170 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:31:36,170 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:31:36,170 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 99 Supporting invariants [] [2021-08-31 01:31:36,188 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 01:31:36,190 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:31:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:36,217 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:36,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:36,227 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:31:36,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:36,237 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 01:31:36,262 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:31:36,263 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:36,293 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 30 transitions. Complement of second has 6 states. [2021-08-31 01:31:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-08-31 01:31:36,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2021-08-31 01:31:36,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:36,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2021-08-31 01:31:36,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:36,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2021-08-31 01:31:36,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:36,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2021-08-31 01:31:36,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-31 01:31:36,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2021-08-31 01:31:36,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-08-31 01:31:36,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-08-31 01:31:36,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-08-31 01:31:36,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:36,305 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-31 01:31:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-08-31 01:31:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-08-31 01:31:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 01:31:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-08-31 01:31:36,318 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-31 01:31:36,318 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-31 01:31:36,318 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 01:31:36,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-08-31 01:31:36,319 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-31 01:31:36,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:36,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:36,319 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-31 01:31:36,320 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-31 01:31:36,320 INFO L791 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 69#L10-2 assume !!(main_~i~0 < 100); 67#L10 assume !(main_~i~0 < 50);main_~i~0 := main_~i~0 - 1; 63#L10-2 [2021-08-31 01:31:36,320 INFO L793 eck$LassoCheckResult]: Loop: 63#L10-2 assume !!(main_~i~0 < 100); 64#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 63#L10-2 [2021-08-31 01:31:36,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:36,320 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-08-31 01:31:36,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:36,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923931701] [2021-08-31 01:31:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:36,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:36,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:36,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923931701] [2021-08-31 01:31:36,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923931701] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:31:36,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:31:36,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-31 01:31:36,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857759645] [2021-08-31 01:31:36,342 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:31:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2021-08-31 01:31:36,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:36,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117141890] [2021-08-31 01:31:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:36,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:36,345 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:36,347 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:36,359 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:36,359 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:36,359 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:36,360 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:36,360 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:31:36,360 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:36,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:36,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2021-08-31 01:31:36,360 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:36,360 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:36,361 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 01:31:36,363 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 01:31:36,367 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 01:31:36,389 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:36,389 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:31:36,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,390 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 01:31:36,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:36,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:36,433 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 01:31:36,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-08-31 01:31:36,453 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:31:36,453 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 01:31:36,468 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 01:31:36,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,469 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 01:31:36,470 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 01:31:36,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:36,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:36,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-08-31 01:31:36,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,508 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 01:31:36,509 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 01:31:36,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:31:36,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:36,536 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:31:36,539 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 01:31:36,539 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:36,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:36,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:36,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:36,539 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:31:36,540 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:36,540 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:36,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2021-08-31 01:31:36,540 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:36,540 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:36,541 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 01:31:36,545 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 01:31:36,548 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 01:31:36,572 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:36,573 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:31:36,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,574 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 01:31:36,575 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 01:31:36,576 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 01:31:36,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:31:36,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:31:36,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:31:36,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:31:36,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:31:36,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:31:36,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:31:36,598 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:31:36,600 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:31:36,600 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:31:36,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,601 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 01:31:36,602 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 01:31:36,603 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:31:36,603 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:31:36,603 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:31:36,603 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 99 Supporting invariants [] [2021-08-31 01:31:36,619 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 01:31:36,620 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:31:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:36,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:36,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:36,639 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:31:36,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:36,645 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 01:31:36,645 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:31:36,645 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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 01:31:36,655 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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 11 states and 16 transitions. Complement of second has 5 states. [2021-08-31 01:31:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:36,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) 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 01:31:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-08-31 01:31:36,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-08-31 01:31:36,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:36,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2021-08-31 01:31:36,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:36,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2021-08-31 01:31:36,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:36,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2021-08-31 01:31:36,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-31 01:31:36,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2021-08-31 01:31:36,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-08-31 01:31:36,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-08-31 01:31:36,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2021-08-31 01:31:36,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:36,660 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-08-31 01:31:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2021-08-31 01:31:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-31 01:31:36,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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 01:31:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2021-08-31 01:31:36,662 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-08-31 01:31:36,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 01:31:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 01:31:36,666 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:36,674 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2021-08-31 01:31:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 01:31:36,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2021-08-31 01:31:36,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-31 01:31:36,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 16 transitions. [2021-08-31 01:31:36,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-08-31 01:31:36,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-08-31 01:31:36,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2021-08-31 01:31:36,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:36,676 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-08-31 01:31:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2021-08-31 01:31:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-08-31 01:31:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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 01:31:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-08-31 01:31:36,678 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-08-31 01:31:36,678 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-08-31 01:31:36,678 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 01:31:36,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-08-31 01:31:36,678 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-31 01:31:36,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:36,679 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:36,679 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1] [2021-08-31 01:31:36,679 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-31 01:31:36,679 INFO L791 eck$LassoCheckResult]: Stem: 144#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 139#L10-2 assume !!(main_~i~0 < 100); 140#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 149#L10-2 assume !!(main_~i~0 < 100); 148#L10 assume !(main_~i~0 < 50);main_~i~0 := main_~i~0 - 1; 146#L10-2 assume !!(main_~i~0 < 100); 142#L10 assume !(main_~i~0 < 50);main_~i~0 := main_~i~0 - 1; 145#L10-2 [2021-08-31 01:31:36,679 INFO L793 eck$LassoCheckResult]: Loop: 145#L10-2 assume !!(main_~i~0 < 100); 147#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 145#L10-2 [2021-08-31 01:31:36,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:36,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1366043347, now seen corresponding path program 1 times [2021-08-31 01:31:36,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:36,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088868299] [2021-08-31 01:31:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:36,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:36,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:36,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088868299] [2021-08-31 01:31:36,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088868299] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:31:36,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645274203] [2021-08-31 01:31:36,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:36,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:31:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,702 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:31:36,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-31 01:31:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:36,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-31 01:31:36,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:36,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:31:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:36,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645274203] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:31:36,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:31:36,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-08-31 01:31:36,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018825038] [2021-08-31 01:31:36,786 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-31 01:31:36,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:36,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2021-08-31 01:31:36,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:36,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466240461] [2021-08-31 01:31:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:36,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:36,790 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:36,792 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:36,804 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:36,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:36,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:36,805 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:36,805 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:31:36,805 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,805 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:36,805 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:36,805 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2021-08-31 01:31:36,805 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:36,805 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:36,806 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 01:31:36,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:31:36,812 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 01:31:36,833 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:36,833 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:31:36,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,834 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 01:31:36,835 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 01:31:36,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:36,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:36,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:31:36,858 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 01:31:36,875 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 01:31:36,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,877 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 01:31:36,878 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 01:31:36,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:36,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:36,917 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 01:31:36,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:36,918 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 01:31:36,919 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 01:31:36,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:31:36,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:36,950 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:31:36,956 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 01:31:36,956 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:36,957 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:36,957 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:36,957 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:36,957 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:31:36,957 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,957 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:36,957 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:36,957 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2021-08-31 01:31:36,957 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:36,957 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:36,958 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 01:31:36,962 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 01:31:36,964 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 01:31:36,988 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:36,988 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:31:36,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:36,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,005 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 01:31:37,006 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 01:31:37,016 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 01:31:37,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:31:37,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:31:37,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:31:37,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:31:37,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:31:37,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:31:37,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:31:37,033 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:31:37,034 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:31:37,034 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:31:37,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:37,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,036 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 01:31:37,036 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 01:31:37,037 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:31:37,037 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:31:37,037 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:31:37,037 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 99 Supporting invariants [] [2021-08-31 01:31:37,054 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 01:31:37,055 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:31:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,082 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,087 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 01:31:37,087 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:31:37,088 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 01:31:37,096 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 19 transitions. Complement of second has 5 states. [2021-08-31 01:31:37,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 01:31:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-08-31 01:31:37,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 2 letters. [2021-08-31 01:31:37,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,097 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 01:31:37,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,146 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,166 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 01:31:37,170 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 01:31:37,170 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:31:37,170 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 01:31:37,177 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 19 transitions. Complement of second has 5 states. [2021-08-31 01:31:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 01:31:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-08-31 01:31:37,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 2 letters. [2021-08-31 01:31:37,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,178 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 01:31:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,201 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,206 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 01:31:37,207 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:31:37,207 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 01:31:37,216 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 15 states and 22 transitions. Complement of second has 4 states. [2021-08-31 01:31:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 01:31:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-08-31 01:31:37,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2021-08-31 01:31:37,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 9 letters. Loop has 2 letters. [2021-08-31 01:31:37,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 4 letters. [2021-08-31 01:31:37,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2021-08-31 01:31:37,219 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-31 01:31:37,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 18 transitions. [2021-08-31 01:31:37,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-08-31 01:31:37,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-08-31 01:31:37,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2021-08-31 01:31:37,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:37,220 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-08-31 01:31:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2021-08-31 01:31:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 6. [2021-08-31 01:31:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-08-31 01:31:37,221 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-08-31 01:31:37,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-31 01:31:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-31 01:31:37,222 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 01:31:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:37,234 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-08-31 01:31:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-31 01:31:37,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2021-08-31 01:31:37,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-31 01:31:37,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 15 transitions. [2021-08-31 01:31:37,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-08-31 01:31:37,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-08-31 01:31:37,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2021-08-31 01:31:37,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:37,236 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-08-31 01:31:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2021-08-31 01:31:37,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-08-31 01:31:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 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 01:31:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-08-31 01:31:37,237 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-31 01:31:37,238 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-08-31 01:31:37,238 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 01:31:37,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-08-31 01:31:37,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-31 01:31:37,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:37,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:37,239 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 1] [2021-08-31 01:31:37,239 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-31 01:31:37,239 INFO L791 eck$LassoCheckResult]: Stem: 365#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 361#L10-2 assume !!(main_~i~0 < 100); 362#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 363#L10-2 assume !!(main_~i~0 < 100); 364#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 368#L10-2 assume !!(main_~i~0 < 100); 372#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 371#L10-2 assume !!(main_~i~0 < 100); 370#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 369#L10-2 assume !!(main_~i~0 < 100); 366#L10 [2021-08-31 01:31:37,239 INFO L793 eck$LassoCheckResult]: Loop: 366#L10 assume !(main_~i~0 < 50);main_~i~0 := main_~i~0 - 1; 367#L10-2 assume !!(main_~i~0 < 100); 366#L10 [2021-08-31 01:31:37,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1039528738, now seen corresponding path program 2 times [2021-08-31 01:31:37,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:37,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799311400] [2021-08-31 01:31:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:37,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:37,244 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:37,248 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:37,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2021-08-31 01:31:37,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:37,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6334804] [2021-08-31 01:31:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:37,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:37,251 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:37,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1740263225, now seen corresponding path program 2 times [2021-08-31 01:31:37,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:37,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20926505] [2021-08-31 01:31:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:37,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:37,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:37,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20926505] [2021-08-31 01:31:37,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20926505] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:31:37,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311263897] [2021-08-31 01:31:37,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-31 01:31:37,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:31:37,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,284 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:31:37,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-31 01:31:37,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 01:31:37,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-31 01:31:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:37,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:31:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:37,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311263897] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:31:37,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:31:37,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-08-31 01:31:37,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949790996] [2021-08-31 01:31:37,388 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:37,389 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:37,389 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:37,389 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:37,389 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:31:37,389 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:37,389 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:37,389 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:37,389 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2021-08-31 01:31:37,390 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:37,390 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:37,391 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 01:31:37,392 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 01:31:37,396 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 01:31:37,420 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:37,421 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:31:37,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:37,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,422 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 01:31:37,423 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 01:31:37,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:37,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:37,445 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:31:37,446 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:31:37,463 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 01:31:37,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,464 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 01:31:37,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:37,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:37,470 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 01:31:37,507 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 01:31:37,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,508 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 01:31:37,509 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 01:31:37,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:31:37,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:37,538 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:31:37,543 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 01:31:37,543 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:37,543 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:37,543 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:37,543 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:37,543 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:31:37,543 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:37,543 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:37,543 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:37,543 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2021-08-31 01:31:37,543 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:37,543 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:37,544 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 01:31:37,549 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 01:31:37,550 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 01:31:37,572 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:37,572 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:31:37,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:37,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,573 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 01:31:37,573 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 01:31:37,575 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 01:31:37,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:31:37,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:31:37,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:31:37,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:31:37,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:31:37,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:31:37,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:31:37,604 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:31:37,607 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:31:37,607 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 01:31:37,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:37,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,616 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 01:31:37,617 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 01:31:37,620 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:31:37,620 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:31:37,620 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:31:37,620 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 01:31:37,635 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 01:31:37,635 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:31:37,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,668 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,680 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 01:31:37,680 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 01:31:37,680 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 01:31:37,684 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 12 states and 14 transitions. Complement of second has 3 states. [2021-08-31 01:31:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 01:31:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2021-08-31 01:31:37,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 10 letters. Loop has 2 letters. [2021-08-31 01:31:37,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,685 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 01:31:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,714 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,750 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 01:31:37,751 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-31 01:31:37,751 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 01:31:37,754 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 12 states and 14 transitions. Complement of second has 3 states. [2021-08-31 01:31:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 01:31:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2021-08-31 01:31:37,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 10 letters. Loop has 2 letters. [2021-08-31 01:31:37,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,755 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 01:31:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,766 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 01:31:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,784 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:37,795 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 01:31:37,795 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 2 loop predicates [2021-08-31 01:31:37,795 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 01:31:37,802 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16 states and 18 transitions. Complement of second has 4 states. [2021-08-31 01:31:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 01:31:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-08-31 01:31:37,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2021-08-31 01:31:37,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 12 letters. Loop has 2 letters. [2021-08-31 01:31:37,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 4 letters. [2021-08-31 01:31:37,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:37,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2021-08-31 01:31:37,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-08-31 01:31:37,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 16 transitions. [2021-08-31 01:31:37,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-31 01:31:37,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-08-31 01:31:37,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-08-31 01:31:37,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:37,806 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-31 01:31:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-08-31 01:31:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-08-31 01:31:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 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 01:31:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-08-31 01:31:37,807 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-08-31 01:31:37,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:37,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-31 01:31:37,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-08-31 01:31:37,811 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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 01:31:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:37,834 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-08-31 01:31:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-31 01:31:37,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 34 transitions. [2021-08-31 01:31:37,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:31:37,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 28 transitions. [2021-08-31 01:31:37,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-31 01:31:37,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-08-31 01:31:37,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 28 transitions. [2021-08-31 01:31:37,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:37,836 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-08-31 01:31:37,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 28 transitions. [2021-08-31 01:31:37,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-08-31 01:31:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.08) internal successors, (27), 24 states have internal predecessors, (27), 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 01:31:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-08-31 01:31:37,837 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-08-31 01:31:37,837 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-08-31 01:31:37,837 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-31 01:31:37,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2021-08-31 01:31:37,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:31:37,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:37,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:37,839 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 1] [2021-08-31 01:31:37,839 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-08-31 01:31:37,839 INFO L791 eck$LassoCheckResult]: Stem: 672#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 668#L10-2 assume !!(main_~i~0 < 100); 669#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 670#L10-2 assume !!(main_~i~0 < 100); 671#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 675#L10-2 assume !!(main_~i~0 < 100); 692#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 691#L10-2 assume !!(main_~i~0 < 100); 690#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 689#L10-2 assume !!(main_~i~0 < 100); 688#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 687#L10-2 assume !!(main_~i~0 < 100); 686#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 685#L10-2 assume !!(main_~i~0 < 100); 684#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 683#L10-2 assume !!(main_~i~0 < 100); 682#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 681#L10-2 assume !!(main_~i~0 < 100); 679#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 678#L10-2 assume !!(main_~i~0 < 100); 677#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 676#L10-2 assume !!(main_~i~0 < 100); 673#L10 [2021-08-31 01:31:37,839 INFO L793 eck$LassoCheckResult]: Loop: 673#L10 assume !(main_~i~0 < 50);main_~i~0 := main_~i~0 - 1; 674#L10-2 assume !!(main_~i~0 < 100); 677#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 676#L10-2 assume !!(main_~i~0 < 100); 673#L10 [2021-08-31 01:31:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash -763184948, now seen corresponding path program 3 times [2021-08-31 01:31:37,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:37,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570542576] [2021-08-31 01:31:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:37,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:37,847 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:37,853 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2021-08-31 01:31:37,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:37,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948125674] [2021-08-31 01:31:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:37,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:37,856 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:37,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash -307729532, now seen corresponding path program 3 times [2021-08-31 01:31:37,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:37,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497906378] [2021-08-31 01:31:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:37,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:37,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:37,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497906378] [2021-08-31 01:31:37,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497906378] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:31:37,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390990374] [2021-08-31 01:31:37,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-31 01:31:37,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:31:37,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:37,936 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:31:37,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-31 01:31:37,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-08-31 01:31:37,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 01:31:37,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-31 01:31:37,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:38,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:31:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:38,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390990374] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:31:38,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:31:38,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-08-31 01:31:38,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109862894] [2021-08-31 01:31:38,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-31 01:31:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-08-31 01:31:38,208 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. cyclomatic complexity: 3 Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 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 01:31:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:38,262 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2021-08-31 01:31:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-31 01:31:38,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 64 transitions. [2021-08-31 01:31:38,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:31:38,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 50 states and 52 transitions. [2021-08-31 01:31:38,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-31 01:31:38,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-08-31 01:31:38,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 52 transitions. [2021-08-31 01:31:38,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:38,264 INFO L681 BuchiCegarLoop]: Abstraction has 50 states and 52 transitions. [2021-08-31 01:31:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 52 transitions. [2021-08-31 01:31:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-08-31 01:31:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 48 states have internal predecessors, (51), 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 01:31:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-08-31 01:31:38,267 INFO L704 BuchiCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-08-31 01:31:38,267 INFO L587 BuchiCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-08-31 01:31:38,267 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-31 01:31:38,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 51 transitions. [2021-08-31 01:31:38,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:31:38,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:38,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:38,269 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [23, 22, 1] [2021-08-31 01:31:38,269 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-08-31 01:31:38,269 INFO L791 eck$LassoCheckResult]: Stem: 938#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 934#L10-2 assume !!(main_~i~0 < 100); 935#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 936#L10-2 assume !!(main_~i~0 < 100); 937#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 941#L10-2 assume !!(main_~i~0 < 100); 982#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 981#L10-2 assume !!(main_~i~0 < 100); 980#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 979#L10-2 assume !!(main_~i~0 < 100); 978#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 977#L10-2 assume !!(main_~i~0 < 100); 976#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 975#L10-2 assume !!(main_~i~0 < 100); 974#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 973#L10-2 assume !!(main_~i~0 < 100); 972#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 971#L10-2 assume !!(main_~i~0 < 100); 970#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 969#L10-2 assume !!(main_~i~0 < 100); 968#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 967#L10-2 assume !!(main_~i~0 < 100); 966#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 965#L10-2 assume !!(main_~i~0 < 100); 964#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 963#L10-2 assume !!(main_~i~0 < 100); 962#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 961#L10-2 assume !!(main_~i~0 < 100); 960#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 959#L10-2 assume !!(main_~i~0 < 100); 958#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 957#L10-2 assume !!(main_~i~0 < 100); 956#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 955#L10-2 assume !!(main_~i~0 < 100); 954#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 953#L10-2 assume !!(main_~i~0 < 100); 952#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 951#L10-2 assume !!(main_~i~0 < 100); 950#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 949#L10-2 assume !!(main_~i~0 < 100); 948#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 947#L10-2 assume !!(main_~i~0 < 100); 945#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 944#L10-2 assume !!(main_~i~0 < 100); 943#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 942#L10-2 assume !!(main_~i~0 < 100); 939#L10 [2021-08-31 01:31:38,269 INFO L793 eck$LassoCheckResult]: Loop: 939#L10 assume !(main_~i~0 < 50);main_~i~0 := main_~i~0 - 1; 940#L10-2 assume !!(main_~i~0 < 100); 943#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 942#L10-2 assume !!(main_~i~0 < 100); 939#L10 [2021-08-31 01:31:38,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:38,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2098056792, now seen corresponding path program 4 times [2021-08-31 01:31:38,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:38,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515715558] [2021-08-31 01:31:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:38,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:38,280 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:38,289 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:38,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 2 times [2021-08-31 01:31:38,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:38,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982595241] [2021-08-31 01:31:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:38,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:38,292 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:38,293 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:38,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1974998624, now seen corresponding path program 4 times [2021-08-31 01:31:38,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:38,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198069339] [2021-08-31 01:31:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:38,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 69 proven. 506 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:38,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:38,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198069339] [2021-08-31 01:31:38,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198069339] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:31:38,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019353480] [2021-08-31 01:31:38,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-31 01:31:38,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:31:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:38,520 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:31:38,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-31 01:31:38,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-31 01:31:38,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 01:31:38,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-31 01:31:38,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 69 proven. 506 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:38,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:31:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 69 proven. 506 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:39,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019353480] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:31:39,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:31:39,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-08-31 01:31:39,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204795846] [2021-08-31 01:31:39,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-08-31 01:31:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-08-31 01:31:39,231 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. cyclomatic complexity: 3 Second operand has 48 states, 48 states have (on average 2.0) internal successors, (96), 47 states have internal predecessors, (96), 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 01:31:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:39,322 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2021-08-31 01:31:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-31 01:31:39,322 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 122 states and 124 transitions. [2021-08-31 01:31:39,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:31:39,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 122 states to 98 states and 100 transitions. [2021-08-31 01:31:39,324 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-31 01:31:39,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-08-31 01:31:39,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 100 transitions. [2021-08-31 01:31:39,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:39,325 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 100 transitions. [2021-08-31 01:31:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 100 transitions. [2021-08-31 01:31:39,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-08-31 01:31:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 96 states have internal predecessors, (99), 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 01:31:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2021-08-31 01:31:39,328 INFO L704 BuchiCegarLoop]: Abstraction has 97 states and 99 transitions. [2021-08-31 01:31:39,328 INFO L587 BuchiCegarLoop]: Abstraction has 97 states and 99 transitions. [2021-08-31 01:31:39,329 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-08-31 01:31:39,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 99 transitions. [2021-08-31 01:31:39,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:31:39,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:39,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:39,331 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [47, 46, 1] [2021-08-31 01:31:39,331 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-08-31 01:31:39,331 INFO L791 eck$LassoCheckResult]: Stem: 1456#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 1452#L10-2 assume !!(main_~i~0 < 100); 1453#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1454#L10-2 assume !!(main_~i~0 < 100); 1455#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1459#L10-2 assume !!(main_~i~0 < 100); 1548#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1547#L10-2 assume !!(main_~i~0 < 100); 1546#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1545#L10-2 assume !!(main_~i~0 < 100); 1544#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1543#L10-2 assume !!(main_~i~0 < 100); 1542#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1541#L10-2 assume !!(main_~i~0 < 100); 1540#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1539#L10-2 assume !!(main_~i~0 < 100); 1538#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1537#L10-2 assume !!(main_~i~0 < 100); 1536#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1535#L10-2 assume !!(main_~i~0 < 100); 1534#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1533#L10-2 assume !!(main_~i~0 < 100); 1532#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1531#L10-2 assume !!(main_~i~0 < 100); 1530#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1529#L10-2 assume !!(main_~i~0 < 100); 1528#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1527#L10-2 assume !!(main_~i~0 < 100); 1526#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1525#L10-2 assume !!(main_~i~0 < 100); 1524#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1523#L10-2 assume !!(main_~i~0 < 100); 1522#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1521#L10-2 assume !!(main_~i~0 < 100); 1520#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1519#L10-2 assume !!(main_~i~0 < 100); 1518#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1517#L10-2 assume !!(main_~i~0 < 100); 1516#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1515#L10-2 assume !!(main_~i~0 < 100); 1514#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1513#L10-2 assume !!(main_~i~0 < 100); 1512#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1511#L10-2 assume !!(main_~i~0 < 100); 1510#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1509#L10-2 assume !!(main_~i~0 < 100); 1508#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1507#L10-2 assume !!(main_~i~0 < 100); 1506#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1505#L10-2 assume !!(main_~i~0 < 100); 1504#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1503#L10-2 assume !!(main_~i~0 < 100); 1502#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1501#L10-2 assume !!(main_~i~0 < 100); 1500#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1499#L10-2 assume !!(main_~i~0 < 100); 1498#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1497#L10-2 assume !!(main_~i~0 < 100); 1496#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1495#L10-2 assume !!(main_~i~0 < 100); 1494#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1493#L10-2 assume !!(main_~i~0 < 100); 1492#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1491#L10-2 assume !!(main_~i~0 < 100); 1490#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1489#L10-2 assume !!(main_~i~0 < 100); 1488#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1487#L10-2 assume !!(main_~i~0 < 100); 1486#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1485#L10-2 assume !!(main_~i~0 < 100); 1484#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1483#L10-2 assume !!(main_~i~0 < 100); 1482#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1481#L10-2 assume !!(main_~i~0 < 100); 1480#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1479#L10-2 assume !!(main_~i~0 < 100); 1478#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1477#L10-2 assume !!(main_~i~0 < 100); 1476#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1475#L10-2 assume !!(main_~i~0 < 100); 1474#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1473#L10-2 assume !!(main_~i~0 < 100); 1472#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1471#L10-2 assume !!(main_~i~0 < 100); 1470#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1469#L10-2 assume !!(main_~i~0 < 100); 1468#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1467#L10-2 assume !!(main_~i~0 < 100); 1466#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1465#L10-2 assume !!(main_~i~0 < 100); 1463#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1462#L10-2 assume !!(main_~i~0 < 100); 1461#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1460#L10-2 assume !!(main_~i~0 < 100); 1457#L10 [2021-08-31 01:31:39,331 INFO L793 eck$LassoCheckResult]: Loop: 1457#L10 assume !(main_~i~0 < 50);main_~i~0 := main_~i~0 - 1; 1458#L10-2 assume !!(main_~i~0 < 100); 1461#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 1460#L10-2 assume !!(main_~i~0 < 100); 1457#L10 [2021-08-31 01:31:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:39,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1692116832, now seen corresponding path program 5 times [2021-08-31 01:31:39,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:39,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9629664] [2021-08-31 01:31:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:39,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:39,349 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:39,365 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:39,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 3 times [2021-08-31 01:31:39,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:39,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998971738] [2021-08-31 01:31:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:39,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:39,368 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:39,369 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:39,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:39,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1241518056, now seen corresponding path program 5 times [2021-08-31 01:31:39,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:39,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996904590] [2021-08-31 01:31:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:39,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 141 proven. 2162 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:40,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:40,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996904590] [2021-08-31 01:31:40,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996904590] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-31 01:31:40,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23570907] [2021-08-31 01:31:40,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-31 01:31:40,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-31 01:31:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:40,134 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-31 01:31:40,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-31 01:31:40,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-08-31 01:31:40,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-31 01:31:40,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-31 01:31:40,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 141 proven. 2162 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:40,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-31 01:31:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 141 proven. 2162 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-31 01:31:40,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23570907] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-31 01:31:40,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-31 01:31:40,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2021-08-31 01:31:40,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790022930] [2021-08-31 01:31:40,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:40,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-31 01:31:40,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-31 01:31:40,675 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. cyclomatic complexity: 3 Second operand has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 51 states have internal predecessors, (105), 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 01:31:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:40,773 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2021-08-31 01:31:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-31 01:31:40,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 110 states and 112 transitions. [2021-08-31 01:31:40,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:31:40,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 110 states to 106 states and 108 transitions. [2021-08-31 01:31:40,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-31 01:31:40,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-08-31 01:31:40,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 108 transitions. [2021-08-31 01:31:40,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:40,775 INFO L681 BuchiCegarLoop]: Abstraction has 106 states and 108 transitions. [2021-08-31 01:31:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 108 transitions. [2021-08-31 01:31:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-08-31 01:31:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.019047619047619) internal successors, (107), 104 states have internal predecessors, (107), 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 01:31:40,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2021-08-31 01:31:40,779 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 107 transitions. [2021-08-31 01:31:40,779 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 107 transitions. [2021-08-31 01:31:40,779 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-08-31 01:31:40,779 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 107 transitions. [2021-08-31 01:31:40,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 01:31:40,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:40,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:40,780 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [51, 50, 1] [2021-08-31 01:31:40,780 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-08-31 01:31:40,781 INFO L791 eck$LassoCheckResult]: Stem: 2302#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 2298#L10-2 assume !!(main_~i~0 < 100); 2299#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2300#L10-2 assume !!(main_~i~0 < 100); 2301#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2305#L10-2 assume !!(main_~i~0 < 100); 2402#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2401#L10-2 assume !!(main_~i~0 < 100); 2400#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2399#L10-2 assume !!(main_~i~0 < 100); 2398#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2397#L10-2 assume !!(main_~i~0 < 100); 2396#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2395#L10-2 assume !!(main_~i~0 < 100); 2394#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2393#L10-2 assume !!(main_~i~0 < 100); 2392#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2391#L10-2 assume !!(main_~i~0 < 100); 2390#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2389#L10-2 assume !!(main_~i~0 < 100); 2388#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2387#L10-2 assume !!(main_~i~0 < 100); 2386#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2385#L10-2 assume !!(main_~i~0 < 100); 2384#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2383#L10-2 assume !!(main_~i~0 < 100); 2382#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2381#L10-2 assume !!(main_~i~0 < 100); 2380#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2379#L10-2 assume !!(main_~i~0 < 100); 2378#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2377#L10-2 assume !!(main_~i~0 < 100); 2376#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2375#L10-2 assume !!(main_~i~0 < 100); 2374#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2373#L10-2 assume !!(main_~i~0 < 100); 2372#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2371#L10-2 assume !!(main_~i~0 < 100); 2370#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2369#L10-2 assume !!(main_~i~0 < 100); 2368#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2367#L10-2 assume !!(main_~i~0 < 100); 2366#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2365#L10-2 assume !!(main_~i~0 < 100); 2364#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2363#L10-2 assume !!(main_~i~0 < 100); 2362#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2361#L10-2 assume !!(main_~i~0 < 100); 2360#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2359#L10-2 assume !!(main_~i~0 < 100); 2358#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2357#L10-2 assume !!(main_~i~0 < 100); 2356#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2355#L10-2 assume !!(main_~i~0 < 100); 2354#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2353#L10-2 assume !!(main_~i~0 < 100); 2352#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2351#L10-2 assume !!(main_~i~0 < 100); 2350#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2349#L10-2 assume !!(main_~i~0 < 100); 2348#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2347#L10-2 assume !!(main_~i~0 < 100); 2346#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2345#L10-2 assume !!(main_~i~0 < 100); 2344#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2343#L10-2 assume !!(main_~i~0 < 100); 2342#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2341#L10-2 assume !!(main_~i~0 < 100); 2340#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2339#L10-2 assume !!(main_~i~0 < 100); 2338#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2337#L10-2 assume !!(main_~i~0 < 100); 2336#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2335#L10-2 assume !!(main_~i~0 < 100); 2334#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2333#L10-2 assume !!(main_~i~0 < 100); 2332#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2331#L10-2 assume !!(main_~i~0 < 100); 2330#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2329#L10-2 assume !!(main_~i~0 < 100); 2328#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2327#L10-2 assume !!(main_~i~0 < 100); 2326#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2325#L10-2 assume !!(main_~i~0 < 100); 2324#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2323#L10-2 assume !!(main_~i~0 < 100); 2322#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2321#L10-2 assume !!(main_~i~0 < 100); 2320#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2319#L10-2 assume !!(main_~i~0 < 100); 2318#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2317#L10-2 assume !!(main_~i~0 < 100); 2316#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2315#L10-2 assume !!(main_~i~0 < 100); 2314#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2313#L10-2 assume !!(main_~i~0 < 100); 2312#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2311#L10-2 assume !!(main_~i~0 < 100); 2309#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2308#L10-2 assume !!(main_~i~0 < 100); 2307#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2306#L10-2 assume !!(main_~i~0 < 100); 2303#L10 [2021-08-31 01:31:40,781 INFO L793 eck$LassoCheckResult]: Loop: 2303#L10 assume !(main_~i~0 < 50);main_~i~0 := main_~i~0 - 1; 2304#L10-2 assume !!(main_~i~0 < 100); 2307#L10 assume main_~i~0 < 50;main_~i~0 := 1 + main_~i~0; 2306#L10-2 assume !!(main_~i~0 < 100); 2303#L10 [2021-08-31 01:31:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:40,781 INFO L82 PathProgramCache]: Analyzing trace with hash 102619732, now seen corresponding path program 6 times [2021-08-31 01:31:40,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:40,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996478343] [2021-08-31 01:31:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:40,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:40,791 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:40,801 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 4 times [2021-08-31 01:31:40,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:40,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969031607] [2021-08-31 01:31:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:40,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:40,803 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:40,804 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:40,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1270380276, now seen corresponding path program 6 times [2021-08-31 01:31:40,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:40,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074419115] [2021-08-31 01:31:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:40,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:40,812 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:40,822 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:41,690 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 01:31:41,692 INFO L158 Benchmark]: Toolchain (without parser) took 6559.21ms. Allocated memory was 71.3MB in the beginning and 119.5MB in the end (delta: 48.2MB). Free memory was 56.3MB in the beginning and 93.1MB in the end (delta: -36.8MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2021-08-31 01:31:41,692 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:31:41,692 INFO L158 Benchmark]: CACSL2BoogieTranslator took 137.50ms. Allocated memory is still 71.3MB. Free memory was 56.1MB in the beginning and 47.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 01:31:41,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.32ms. Allocated memory is still 71.3MB. Free memory was 47.4MB in the beginning and 55.9MB in the end (delta: -8.5MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-08-31 01:31:41,693 INFO L158 Benchmark]: Boogie Preprocessor took 11.15ms. Allocated memory is still 71.3MB. Free memory was 55.9MB in the beginning and 54.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:31:41,693 INFO L158 Benchmark]: RCFGBuilder took 143.16ms. Allocated memory is still 71.3MB. Free memory was 54.9MB in the beginning and 47.6MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 01:31:41,693 INFO L158 Benchmark]: BuchiAutomizer took 6200.90ms. Allocated memory was 71.3MB in the beginning and 119.5MB in the end (delta: 48.2MB). Free memory was 47.6MB in the beginning and 93.1MB in the end (delta: -45.5MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2021-08-31 01:31:41,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 71.3MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 137.50ms. Allocated memory is still 71.3MB. Free memory was 56.1MB in the beginning and 47.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.32ms. Allocated memory is still 71.3MB. Free memory was 47.4MB in the beginning and 55.9MB in the end (delta: -8.5MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.15ms. Allocated memory is still 71.3MB. Free memory was 55.9MB in the beginning and 54.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 143.16ms. Allocated memory is still 71.3MB. Free memory was 54.9MB in the beginning and 47.6MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6200.90ms. Allocated memory was 71.3MB in the beginning and 119.5MB in the end (delta: 48.2MB). Free memory was 47.6MB in the beginning and 93.1MB in the end (delta: -45.5MB). Peak memory consumption was 62.2MB. 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 10 terminating modules (6 trivial, 2 deterministic, 2 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + 99 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 99 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 99 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 52 locations. The remainder module has 105 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 01:31:41,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:41,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:42,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-08-31 01:31:42,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:42,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:42,732 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...