./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.13.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/b.13.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 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-31 01:32:38,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 01:32:38,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 01:32:38,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 01:32:38,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 01:32:38,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 01:32:38,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 01:32:38,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 01:32:38,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 01:32:38,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 01:32:38,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 01:32:38,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 01:32:38,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 01:32:38,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 01:32:38,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 01:32:38,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 01:32:38,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 01:32:38,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 01:32:38,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 01:32:38,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 01:32:38,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 01:32:38,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 01:32:38,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 01:32:38,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 01:32:38,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 01:32:38,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 01:32:38,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 01:32:38,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 01:32:38,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 01:32:38,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 01:32:38,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 01:32:38,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 01:32:38,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 01:32:38,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 01:32:38,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 01:32:38,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 01:32:38,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 01:32:38,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 01:32:38,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 01:32:38,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 01:32:38,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 01:32:38,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-31 01:32:38,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 01:32:38,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 01:32:38,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 01:32:38,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 01:32:38,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 01:32:38,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 01:32:38,463 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 01:32:38,463 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 01:32:38,463 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 01:32:38,463 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 01:32:38,463 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 01:32:38,463 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 01:32:38,464 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 01:32:38,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 01:32:38,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 01:32:38,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 01:32:38,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 01:32:38,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 01:32:38,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 01:32:38,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 01:32:38,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 01:32:38,479 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 01:32:38,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 01:32:38,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 01:32:38,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 01:32:38,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 01:32:38,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 01:32:38,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 01:32:38,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 01:32:38,480 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 01:32:38,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 [2021-08-31 01:32:38,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 01:32:38,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 01:32:38,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 01:32:38,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 01:32:38,748 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 01:32:38,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.13.c [2021-08-31 01:32:38,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c701c17/cd7b5577a3a243b1a14f6bf2bfa99e3f/FLAGf95cda5d8 [2021-08-31 01:32:39,166 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 01:32:39,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.13.c [2021-08-31 01:32:39,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c701c17/cd7b5577a3a243b1a14f6bf2bfa99e3f/FLAGf95cda5d8 [2021-08-31 01:32:39,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c701c17/cd7b5577a3a243b1a14f6bf2bfa99e3f [2021-08-31 01:32:39,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 01:32:39,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 01:32:39,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 01:32:39,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 01:32:39,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 01:32:39,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e41b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39, skipping insertion in model container [2021-08-31 01:32:39,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 01:32:39,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 01:32:39,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:32:39,320 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 01:32:39,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:32:39,338 INFO L208 MainTranslator]: Completed translation [2021-08-31 01:32:39,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39 WrapperNode [2021-08-31 01:32:39,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 01:32:39,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 01:32:39,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 01:32:39,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 01:32:39,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 01:32:39,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 01:32:39,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 01:32:39,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 01:32:39,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 01:32:39,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 01:32:39,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 01:32:39,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 01:32:39,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (1/1) ... [2021-08-31 01:32:39,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:39,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:39,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:39,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-31 01:32:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 01:32:39,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 01:32:39,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 01:32:39,543 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-31 01:32:39,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:32:39 BoogieIcfgContainer [2021-08-31 01:32:39,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 01:32:39,546 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 01:32:39,546 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 01:32:39,548 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 01:32:39,548 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:32:39,549 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 01:32:39" (1/3) ... [2021-08-31 01:32:39,549 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d8650df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:32:39, skipping insertion in model container [2021-08-31 01:32:39,549 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:32:39,550 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:32:39" (2/3) ... [2021-08-31 01:32:39,550 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d8650df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:32:39, skipping insertion in model container [2021-08-31 01:32:39,550 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:32:39,550 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:32:39" (3/3) ... [2021-08-31 01:32:39,551 INFO L389 chiAutomizerObserver]: Analyzing ICFG b.13.c [2021-08-31 01:32:39,595 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 01:32:39,595 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 01:32:39,595 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 01:32:39,595 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 01:32:39,595 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 01:32:39,595 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 01:32:39,595 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 01:32:39,596 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 01:32:39,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:39,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 01:32:39,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:32:39,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:32:39,618 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:32:39,618 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-31 01:32:39,618 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 01:32:39,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:39,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 01:32:39,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:32:39,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:32:39,620 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:32:39,620 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-31 01:32:39,624 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 8#L16-2true [2021-08-31 01:32:39,624 INFO L793 eck$LassoCheckResult]: Loop: 8#L16-2true assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 7#L13true assume main_~x~0 > main_~z~0;main_~x~0 := main_~x~0 - 1; 8#L16-2true [2021-08-31 01:32:39,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:39,629 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-31 01:32:39,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:39,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456998587] [2021-08-31 01:32:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:39,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:39,679 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:39,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:39,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-08-31 01:32:39,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:39,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533778970] [2021-08-31 01:32:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:39,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:39,740 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:39,764 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:39,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:39,767 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-08-31 01:32:39,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:39,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544157569] [2021-08-31 01:32:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:39,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:39,777 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:39,786 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:39,858 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:39,859 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:39,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:39,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:39,859 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:32:39,859 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:39,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:39,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:39,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2021-08-31 01:32:39,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:39,860 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:39,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:39,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:39,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:39,950 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:39,951 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:32:39,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:39,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:39,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:39,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-31 01:32:39,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:39,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:39,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:32:39,984 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:32:40,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-08-31 01:32:40,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:40,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:40,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-31 01:32:40,034 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:32:40,034 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:32:40,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:40,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:40,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:40,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-31 01:32:40,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:40,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,096 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-31 01:32:40,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:32:40,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:40,250 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:32:40,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:40,261 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:40,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:40,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:40,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:40,262 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:32:40,262 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,262 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:40,262 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:40,262 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2021-08-31 01:32:40,262 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:40,262 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:40,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:40,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:40,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:40,303 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:40,306 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:32:40,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-31 01:32:40,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:32:40,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:40,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:40,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:40,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:40,325 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:32:40,325 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:32:40,331 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:32:40,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:40,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-31 01:32:40,348 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:32:40,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:40,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:40,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:40,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:40,359 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:32:40,359 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:32:40,377 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:32:40,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-08-31 01:32:40,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,393 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-31 01:32:40,395 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:32:40,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:40,401 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:32:40,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:40,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:40,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:40,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:32:40,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:32:40,412 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:32:40,415 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:32:40,415 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 01:32:40,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,417 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-31 01:32:40,419 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:32:40,419 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:32:40,419 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:32:40,419 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-08-31 01:32:40,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:40,437 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:32:40,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:40,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:32:40,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:40,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-08-31 01:32:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:40,513 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 01:32:40,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:32:40,542 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-31 01:32:40,543 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) 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 01:32:40,584 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) 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 34 transitions. Complement of second has 5 states. [2021-08-31 01:32:40,585 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 01:32:40,590 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 01:32:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-08-31 01:32:40,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2021-08-31 01:32:40,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:40,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2021-08-31 01:32:40,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:40,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2021-08-31 01:32:40,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:40,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2021-08-31 01:32:40,596 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 01:32:40,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2021-08-31 01:32:40,599 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-08-31 01:32:40,599 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-08-31 01:32:40,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2021-08-31 01:32:40,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:32:40,600 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-08-31 01:32:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2021-08-31 01:32:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-08-31 01:32:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-08-31 01:32:40,614 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-31 01:32:40,614 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-31 01:32:40,614 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 01:32:40,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-08-31 01:32:40,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 01:32:40,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:32:40,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:32:40,615 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-31 01:32:40,615 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:32:40,616 INFO L791 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 68#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2021-08-31 01:32:40,616 INFO L793 eck$LassoCheckResult]: Loop: 69#L13 assume !(main_~x~0 > main_~z~0); 63#L16 assume main_~y~0 > main_~z~0;main_~y~0 := main_~y~0 - 1; 64#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2021-08-31 01:32:40,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:40,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-31 01:32:40,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:40,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020442488] [2021-08-31 01:32:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:40,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:40,620 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:40,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:40,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:40,624 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2021-08-31 01:32:40,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:40,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782739180] [2021-08-31 01:32:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:40,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:40,627 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:40,630 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2021-08-31 01:32:40,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:40,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934387955] [2021-08-31 01:32:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:40,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:40,635 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:40,640 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:40,663 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:40,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:40,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:40,664 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:40,664 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:32:40,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:40,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:40,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2021-08-31 01:32:40,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:40,664 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:40,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:40,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:40,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:40,697 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:40,697 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:32:40,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,698 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-31 01:32:40,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:40,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:40,739 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:32:40,740 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:32:40,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:40,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,757 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-31 01:32:40,759 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:40,759 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:40,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:32:40,771 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:32:40,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-08-31 01:32:40,785 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-31 01:32:40,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:32:40,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:40,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-08-31 01:32:40,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:40,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:40,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:40,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-31 01:32:40,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:32:40,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:32:41,125 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:32:41,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:41,130 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:32:41,131 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:32:41,131 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:32:41,131 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:32:41,131 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:32:41,131 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:41,131 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:32:41,131 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:32:41,131 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2021-08-31 01:32:41,131 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:32:41,131 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:32:41,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:41,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:41,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:32:41,177 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:32:41,177 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:32:41,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:41,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:41,193 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:41,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-31 01:32:41,195 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:32:41,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:41,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:41,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:41,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:41,204 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:32:41,204 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:32:41,219 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:32:41,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:41,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:41,246 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:41,257 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:32:41,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:32:41,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:32:41,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:32:41,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:32:41,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:32:41,265 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:32:41,265 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:32:41,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-31 01:32:41,275 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:32:41,278 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-31 01:32:41,278 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 01:32:41,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:32:41,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:32:41,293 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:32:41,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-31 01:32:41,295 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:32:41,295 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:32:41,295 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:32:41,295 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-08-31 01:32:41,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:41,321 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:32:41,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:41,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:32:41,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:41,352 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-31 01:32:41,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:32:41,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-31 01:32:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:32:41,432 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 01:32:41,433 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:41,455 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 35 states and 53 transitions. Complement of second has 7 states. [2021-08-31 01:32:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 01:32:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2021-08-31 01:32:41,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2021-08-31 01:32:41,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:41,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2021-08-31 01:32:41,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:41,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2021-08-31 01:32:41,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:32:41,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2021-08-31 01:32:41,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 01:32:41,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2021-08-31 01:32:41,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-08-31 01:32:41,470 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-08-31 01:32:41,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2021-08-31 01:32:41,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:32:41,470 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-08-31 01:32:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2021-08-31 01:32:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-08-31 01:32:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2021-08-31 01:32:41,473 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2021-08-31 01:32:41,474 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2021-08-31 01:32:41,474 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 01:32:41,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2021-08-31 01:32:41,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-31 01:32:41,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:32:41,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:32:41,474 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-31 01:32:41,474 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:32:41,475 INFO L791 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 156#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 161#L13 assume !(main_~x~0 > main_~z~0); 147#L16 [2021-08-31 01:32:41,475 INFO L793 eck$LassoCheckResult]: Loop: 147#L16 assume !(main_~y~0 > main_~z~0); 148#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 157#L13 assume !(main_~x~0 > main_~z~0); 147#L16 [2021-08-31 01:32:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:41,475 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-08-31 01:32:41,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:41,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588082718] [2021-08-31 01:32:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:41,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:41,478 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:32:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:32:41,480 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:32:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:32:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2021-08-31 01:32:41,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:32:41,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941359390] [2021-08-31 01:32:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:32:41,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:32:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:32:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:32:41,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:32:41,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941359390] [2021-08-31 01:32:41,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941359390] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:32:41,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:32:41,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-31 01:32:41,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467228957] [2021-08-31 01:32:41,503 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:32:41,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:32:41,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-31 01:32:41,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-31 01:32:41,505 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:32:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:32:41,521 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2021-08-31 01:32:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-31 01:32:41,521 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2021-08-31 01:32:41,522 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 01:32:41,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-08-31 01:32:41,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 01:32:41,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 01:32:41,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 01:32:41,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:32:41,523 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:32:41,523 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:32:41,523 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 01:32:41,523 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 01:32:41,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-31 01:32:41,523 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 01:32:41,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-31 01:32:41,525 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) at de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData.toString(StatisticsData.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerTimingBenchmark.toString(BuchiAutomizerTimingBenchmark.java:44) at de.uni_freiburg.informatik.ultimate.core.lib.results.StatisticsResult.getLongDescription(StatisticsResult.java:58) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.reportResult(BuchiAutomizerObserver.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-31 01:32:41,527 INFO L158 Benchmark]: Toolchain (without parser) took 2340.31ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 41.1MB in the beginning and 47.4MB in the end (delta: -6.4MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-08-31 01:32:41,528 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 42.3MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:32:41,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.89ms. Allocated memory is still 60.8MB. Free memory was 40.9MB in the beginning and 32.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 01:32:41,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.46ms. Allocated memory is still 60.8MB. Free memory was 32.3MB in the beginning and 43.9MB in the end (delta: -11.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-31 01:32:41,530 INFO L158 Benchmark]: Boogie Preprocessor took 14.01ms. Allocated memory is still 60.8MB. Free memory was 43.9MB in the beginning and 43.1MB in the end (delta: 773.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:32:41,532 INFO L158 Benchmark]: RCFGBuilder took 150.63ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 35.7MB in the end (delta: 7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-31 01:32:41,532 INFO L158 Benchmark]: BuchiAutomizer took 1980.57ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 35.5MB in the beginning and 47.4MB in the end (delta: -11.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-08-31 01:32:41,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 42.3MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.89ms. Allocated memory is still 60.8MB. Free memory was 40.9MB in the beginning and 32.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.46ms. Allocated memory is still 60.8MB. Free memory was 32.3MB in the beginning and 43.9MB in the end (delta: -11.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.01ms. Allocated memory is still 60.8MB. Free memory was 43.9MB in the beginning and 43.1MB in the end (delta: 773.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 150.63ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 35.7MB in the end (delta: 7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1980.57ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 35.5MB in the beginning and 47.4MB in the end (delta: -11.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6): de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-31 01:32:41,566 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...