./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c --full-output --architecture 64bit


--------------------------------------------------------------------------------


Checking for termination
Using default analysis
Version ae007674
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.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 cf5951cf7c939342bb5d014c8a7a12e4f95042e50c8d2f477b21d0a3234d49fe
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-ae00767
[2021-12-28 09:02:38,414 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-12-28 09:02:38,416 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-28 09:02:38,452 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-28 09:02:38,453 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-28 09:02:38,455 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-28 09:02:38,456 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-28 09:02:38,460 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-28 09:02:38,461 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-28 09:02:38,465 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-28 09:02:38,465 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-12-28 09:02:38,466 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-28 09:02:38,467 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-28 09:02:38,468 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-28 09:02:38,469 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-28 09:02:38,473 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-28 09:02:38,474 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-28 09:02:38,475 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-28 09:02:38,476 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-28 09:02:38,480 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-28 09:02:38,481 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-28 09:02:38,482 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-28 09:02:38,482 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-12-28 09:02:38,484 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-28 09:02:38,489 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-28 09:02:38,489 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-28 09:02:38,489 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-28 09:02:38,490 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-28 09:02:38,490 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-28 09:02:38,491 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-28 09:02:38,491 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-28 09:02:38,492 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-28 09:02:38,493 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-28 09:02:38,493 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-28 09:02:38,494 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-28 09:02:38,494 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-28 09:02:38,495 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-28 09:02:38,495 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-28 09:02:38,495 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-28 09:02:38,496 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-28 09:02:38,496 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-12-28 09:02:38,500 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf
[2021-12-28 09:02:38,526 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-12-28 09:02:38,526 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-28 09:02:38,527 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-28 09:02:38,527 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-28 09:02:38,529 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-28 09:02:38,529 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-12-28 09:02:38,529 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-12-28 09:02:38,529 INFO  L136        SettingsManager]: Preferences of BuchiAutomizer differ from their defaults:
[2021-12-28 09:02:38,529 INFO  L138        SettingsManager]:  * NCSB implementation=INTSET_LAZY3
[2021-12-28 09:02:38,530 INFO  L138        SettingsManager]:  * Use old map elimination=false
[2021-12-28 09:02:38,530 INFO  L138        SettingsManager]:  * Use external solver (rank synthesis)=false
[2021-12-28 09:02:38,530 INFO  L138        SettingsManager]:  * Use only trivial implications for array writes=true
[2021-12-28 09:02:38,531 INFO  L138        SettingsManager]:  * Rank analysis=LINEAR_WITH_GUESSES
[2021-12-28 09:02:38,531 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-28 09:02:38,531 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2021-12-28 09:02:38,531 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-12-28 09:02:38,531 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-12-28 09:02:38,531 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=ASSUME
[2021-12-28 09:02:38,531 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=ASSUME
[2021-12-28 09:02:38,532 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=ASSUME
[2021-12-28 09:02:38,532 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-12-28 09:02:38,532 INFO  L138        SettingsManager]:  * Assume nondeterminstic values are in range=false
[2021-12-28 09:02:38,532 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-12-28 09:02:38,532 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=ASSUME
[2021-12-28 09:02:38,532 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-28 09:02:38,532 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-12-28 09:02:38,538 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-28 09:02:38,538 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-12-28 09:02:38,540 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2021-12-28 09:02:38,540 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 -> cf5951cf7c939342bb5d014c8a7a12e4f95042e50c8d2f477b21d0a3234d49fe
[2021-12-28 09:02:38,796 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-28 09:02:38,813 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-28 09:02:38,815 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-28 09:02:38,816 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-12-28 09:02:38,817 INFO  L275        PluginConnector]: CDTParser initialized
[2021-12-28 09:02:38,818 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c
[2021-12-28 09:02:38,866 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0200ff042/4525da9a4c3d47319ee9f9b1d52f21bb/FLAG77cd2e955
[2021-12-28 09:02:39,206 INFO  L306              CDTParser]: Found 1 translation units.
[2021-12-28 09:02:39,206 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c
[2021-12-28 09:02:39,210 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0200ff042/4525da9a4c3d47319ee9f9b1d52f21bb/FLAG77cd2e955
[2021-12-28 09:02:39,220 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0200ff042/4525da9a4c3d47319ee9f9b1d52f21bb
[2021-12-28 09:02:39,222 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-28 09:02:39,223 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-28 09:02:39,225 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-28 09:02:39,225 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-28 09:02:39,228 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-28 09:02:39,228 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,229 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745c226e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39, skipping insertion in model container
[2021-12-28 09:02:39,229 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,233 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-12-28 09:02:39,241 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-12-28 09:02:39,338 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-28 09:02:39,340 INFO  L203         MainTranslator]: Completed pre-run
[2021-12-28 09:02:39,348 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2021-12-28 09:02:39,356 INFO  L208         MainTranslator]: Completed translation
[2021-12-28 09:02:39,356 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39 WrapperNode
[2021-12-28 09:02:39,356 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-28 09:02:39,357 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-28 09:02:39,357 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-28 09:02:39,357 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-28 09:02:39,361 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,365 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,400 INFO  L137                Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15
[2021-12-28 09:02:39,401 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-28 09:02:39,408 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-28 09:02:39,409 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-28 09:02:39,409 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-12-28 09:02:39,413 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,413 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,414 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,414 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,415 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,417 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,417 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,418 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-28 09:02:39,418 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-28 09:02:39,418 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-12-28 09:02:39,419 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-12-28 09:02:39,419 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (1/1) ...
[2021-12-28 09:02:39,423 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:39,429 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:39,450 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)
[2021-12-28 09:02:39,490 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
[2021-12-28 09:02:39,501 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-28 09:02:39,501 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-28 09:02:39,538 INFO  L234             CfgBuilder]: Building ICFG
[2021-12-28 09:02:39,539 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-28 09:02:39,594 INFO  L275             CfgBuilder]: Performing block encoding
[2021-12-28 09:02:39,600 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-28 09:02:39,600 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-28 09:02:39,601 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:02:39 BoogieIcfgContainer
[2021-12-28 09:02:39,602 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-28 09:02:39,602 INFO  L113        PluginConnector]: ------------------------BuchiAutomizer----------------------------
[2021-12-28 09:02:39,602 INFO  L271        PluginConnector]: Initializing BuchiAutomizer...
[2021-12-28 09:02:39,604 INFO  L275        PluginConnector]: BuchiAutomizer initialized
[2021-12-28 09:02:39,605 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2021-12-28 09:02:39,605 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:02:39" (1/3) ...
[2021-12-28 09:02:39,606 INFO  L205        PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f6dd8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:02:39, skipping insertion in model container
[2021-12-28 09:02:39,606 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2021-12-28 09:02:39,606 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:39" (2/3) ...
[2021-12-28 09:02:39,607 INFO  L205        PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f6dd8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:02:39, skipping insertion in model container
[2021-12-28 09:02:39,607 INFO  L99          BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2021-12-28 09:02:39,607 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:02:39" (3/3) ...
[2021-12-28 09:02:39,608 INFO  L388   chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c
[2021-12-28 09:02:39,642 INFO  L359         BuchiCegarLoop]: Interprodecural is true
[2021-12-28 09:02:39,643 INFO  L360         BuchiCegarLoop]: Hoare is false
[2021-12-28 09:02:39,643 INFO  L361         BuchiCegarLoop]: Compute interpolants for ForwardPredicates
[2021-12-28 09:02:39,643 INFO  L362         BuchiCegarLoop]: Backedges is STRAIGHT_LINE
[2021-12-28 09:02:39,643 INFO  L363         BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-12-28 09:02:39,643 INFO  L364         BuchiCegarLoop]: Difference is false
[2021-12-28 09:02:39,643 INFO  L365         BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-12-28 09:02:39,643 INFO  L368         BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop========
[2021-12-28 09:02:39,652 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand  has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-28 09:02:39,662 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 1
[2021-12-28 09:02:39,662 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2021-12-28 09:02:39,662 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2021-12-28 09:02:39,665 INFO  L842         BuchiCegarLoop]: Counterexample stem histogram [1, 1]
[2021-12-28 09:02:39,665 INFO  L843         BuchiCegarLoop]: Counterexample loop histogram [1]
[2021-12-28 09:02:39,665 INFO  L425         BuchiCegarLoop]: ======== Iteration 1============
[2021-12-28 09:02:39,666 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand  has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-28 09:02:39,666 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 1
[2021-12-28 09:02:39,666 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2021-12-28 09:02:39,666 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2021-12-28 09:02:39,667 INFO  L842         BuchiCegarLoop]: Counterexample stem histogram [1, 1]
[2021-12-28 09:02:39,667 INFO  L843         BuchiCegarLoop]: Counterexample loop histogram [1]
[2021-12-28 09:02:39,681 INFO  L791   eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 1; 6#L18-2true 
[2021-12-28 09:02:39,681 INFO  L793   eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - main_~y~0#1;main_~y~0#1 := 1 + main_~y~0#1; 6#L18-2true 
[2021-12-28 09:02:39,685 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-28 09:02:39,686 INFO  L85        PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times
[2021-12-28 09:02:39,692 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-28 09:02:39,693 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347937209]
[2021-12-28 09:02:39,693 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-28 09:02:39,694 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-28 09:02:39,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-28 09:02:39,743 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-12-28 09:02:39,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-28 09:02:39,763 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-12-28 09:02:39,765 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-28 09:02:39,765 INFO  L85        PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times
[2021-12-28 09:02:39,765 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-28 09:02:39,765 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320481395]
[2021-12-28 09:02:39,766 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-28 09:02:39,766 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-28 09:02:39,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-28 09:02:39,787 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-12-28 09:02:39,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-28 09:02:39,793 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-12-28 09:02:39,794 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-28 09:02:39,794 INFO  L85        PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times
[2021-12-28 09:02:39,794 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-28 09:02:39,794 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496408077]
[2021-12-28 09:02:39,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-28 09:02:39,795 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-28 09:02:39,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-28 09:02:39,811 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-12-28 09:02:39,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-12-28 09:02:39,815 INFO  L133   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-12-28 09:02:39,883 INFO  L210          LassoAnalysis]: Preferences:
[2021-12-28 09:02:39,884 INFO  L126   ssoRankerPreferences]: Compute integeral hull: false
[2021-12-28 09:02:39,884 INFO  L127   ssoRankerPreferences]: Enable LassoPartitioneer: true
[2021-12-28 09:02:39,884 INFO  L128   ssoRankerPreferences]: Term annotations enabled: false
[2021-12-28 09:02:39,884 INFO  L129   ssoRankerPreferences]: Use exernal solver: true
[2021-12-28 09:02:39,884 INFO  L130   ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:39,884 INFO  L131   ssoRankerPreferences]: Dump SMT script to file: false
[2021-12-28 09:02:39,884 INFO  L132   ssoRankerPreferences]: Path of dumped script: 
[2021-12-28 09:02:39,885 INFO  L133   ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction.c_Iteration1_Loop
[2021-12-28 09:02:39,899 INFO  L134   ssoRankerPreferences]: MapElimAlgo: Frank
[2021-12-28 09:02:39,899 INFO  L276          LassoAnalysis]: Starting lasso preprocessing...
[2021-12-28 09:02:39,910 INFO  L141          MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true
[2021-12-28 09:02:39,919 INFO  L141          MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true
[2021-12-28 09:02:39,922 INFO  L141          MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true
[2021-12-28 09:02:39,981 INFO  L294          LassoAnalysis]: Preprocessing complete.
[2021-12-28 09:02:39,981 INFO  L404          LassoAnalysis]: Checking for nontermination...
[2021-12-28 09:02:39,982 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:39,983 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:39,984 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)
[2021-12-28 09:02:39,985 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
[2021-12-28 09:02:39,988 INFO  L148   nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true
[2021-12-28 09:02:39,988 INFO  L160   nArgumentSynthesizer]: Using integer mode.
[2021-12-28 09:02:40,009 INFO  L437          LassoAnalysis]: Proved nontermination for one component.
[2021-12-28 09:02:40,010 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: []
[2021-12-28 09:02:40,042 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0
[2021-12-28 09:02:40,042 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,042 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,044 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)
[2021-12-28 09:02:40,045 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
[2021-12-28 09:02:40,046 INFO  L148   nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true
[2021-12-28 09:02:40,046 INFO  L160   nArgumentSynthesizer]: Using integer mode.
[2021-12-28 09:02:40,068 INFO  L437          LassoAnalysis]: Proved nontermination for one component.
[2021-12-28 09:02:40,068 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: []
[2021-12-28 09:02:40,085 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
[2021-12-28 09:02:40,085 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,086 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,087 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)
[2021-12-28 09:02:40,100 INFO  L148   nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true
[2021-12-28 09:02:40,100 INFO  L160   nArgumentSynthesizer]: Using integer mode.
[2021-12-28 09:02:40,107 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
[2021-12-28 09:02:40,146 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0
[2021-12-28 09:02:40,146 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,146 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,148 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)
[2021-12-28 09:02:40,149 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
[2021-12-28 09:02:40,150 INFO  L148   nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true
[2021-12-28 09:02:40,150 INFO  L160   nArgumentSynthesizer]: Using integer mode.
[2021-12-28 09:02:40,272 INFO  L444          LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists.
[2021-12-28 09:02:40,275 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
[2021-12-28 09:02:40,276 INFO  L210          LassoAnalysis]: Preferences:
[2021-12-28 09:02:40,276 INFO  L126   ssoRankerPreferences]: Compute integeral hull: false
[2021-12-28 09:02:40,276 INFO  L127   ssoRankerPreferences]: Enable LassoPartitioneer: true
[2021-12-28 09:02:40,276 INFO  L128   ssoRankerPreferences]: Term annotations enabled: false
[2021-12-28 09:02:40,276 INFO  L129   ssoRankerPreferences]: Use exernal solver: false
[2021-12-28 09:02:40,276 INFO  L130   ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,276 INFO  L131   ssoRankerPreferences]: Dump SMT script to file: false
[2021-12-28 09:02:40,276 INFO  L132   ssoRankerPreferences]: Path of dumped script: 
[2021-12-28 09:02:40,276 INFO  L133   ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction.c_Iteration1_Loop
[2021-12-28 09:02:40,276 INFO  L134   ssoRankerPreferences]: MapElimAlgo: Frank
[2021-12-28 09:02:40,277 INFO  L276          LassoAnalysis]: Starting lasso preprocessing...
[2021-12-28 09:02:40,278 INFO  L141          MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true
[2021-12-28 09:02:40,283 INFO  L141          MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true
[2021-12-28 09:02:40,287 INFO  L141          MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true
[2021-12-28 09:02:40,327 INFO  L294          LassoAnalysis]: Preprocessing complete.
[2021-12-28 09:02:40,353 INFO  L490          LassoAnalysis]: Using template 'affine'.
[2021-12-28 09:02:40,354 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,354 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,355 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)
[2021-12-28 09:02:40,356 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
[2021-12-28 09:02:40,357 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
[2021-12-28 09:02:40,364 INFO  L338   nArgumentSynthesizer]: Template has degree 0.
[2021-12-28 09:02:40,365 INFO  L203   nArgumentSynthesizer]: 1 stem disjuncts
[2021-12-28 09:02:40,365 INFO  L204   nArgumentSynthesizer]: 1 loop disjuncts
[2021-12-28 09:02:40,365 INFO  L205   nArgumentSynthesizer]: 2 template conjuncts.
[2021-12-28 09:02:40,368 INFO  L401   nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications.
[2021-12-28 09:02:40,368 INFO  L402   nArgumentSynthesizer]: A total of 2 supporting invariants were added.
[2021-12-28 09:02:40,378 INFO  L527          LassoAnalysis]: Proving termination failed for this template and these settings.
[2021-12-28 09:02:40,393 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
[2021-12-28 09:02:40,393 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,394 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,394 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)
[2021-12-28 09:02:40,395 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
[2021-12-28 09:02:40,399 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
[2021-12-28 09:02:40,405 INFO  L338   nArgumentSynthesizer]: Template has degree 0.
[2021-12-28 09:02:40,405 INFO  L203   nArgumentSynthesizer]: 1 stem disjuncts
[2021-12-28 09:02:40,406 INFO  L204   nArgumentSynthesizer]: 1 loop disjuncts
[2021-12-28 09:02:40,406 INFO  L205   nArgumentSynthesizer]: 2 template conjuncts.
[2021-12-28 09:02:40,408 INFO  L401   nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications.
[2021-12-28 09:02:40,408 INFO  L402   nArgumentSynthesizer]: A total of 2 supporting invariants were added.
[2021-12-28 09:02:40,420 INFO  L527          LassoAnalysis]: Proving termination failed for this template and these settings.
[2021-12-28 09:02:40,435 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0
[2021-12-28 09:02:40,435 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,436 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,436 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)
[2021-12-28 09:02:40,437 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
[2021-12-28 09:02:40,438 INFO  L120   nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false
[2021-12-28 09:02:40,445 INFO  L338   nArgumentSynthesizer]: Template has degree 0.
[2021-12-28 09:02:40,445 INFO  L351   nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation.
[2021-12-28 09:02:40,446 INFO  L203   nArgumentSynthesizer]: 1 stem disjuncts
[2021-12-28 09:02:40,446 INFO  L204   nArgumentSynthesizer]: 1 loop disjuncts
[2021-12-28 09:02:40,446 INFO  L205   nArgumentSynthesizer]: 2 template conjuncts.
[2021-12-28 09:02:40,448 INFO  L401   nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications.
[2021-12-28 09:02:40,449 INFO  L402   nArgumentSynthesizer]: A total of 0 supporting invariants were added.
[2021-12-28 09:02:40,463 INFO  L527          LassoAnalysis]: Proving termination failed for this template and these settings.
[2021-12-28 09:02:40,481 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
[2021-12-28 09:02:40,481 INFO  L490          LassoAnalysis]: Using template '2-nested'.
[2021-12-28 09:02:40,482 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,482 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,483 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)
[2021-12-28 09:02:40,483 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
[2021-12-28 09:02:40,485 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
[2021-12-28 09:02:40,491 INFO  L338   nArgumentSynthesizer]: Template has degree 0.
[2021-12-28 09:02:40,491 INFO  L203   nArgumentSynthesizer]: 1 stem disjuncts
[2021-12-28 09:02:40,491 INFO  L204   nArgumentSynthesizer]: 1 loop disjuncts
[2021-12-28 09:02:40,491 INFO  L205   nArgumentSynthesizer]: 3 template conjuncts.
[2021-12-28 09:02:40,509 INFO  L401   nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications.
[2021-12-28 09:02:40,509 INFO  L402   nArgumentSynthesizer]: A total of 3 supporting invariants were added.
[2021-12-28 09:02:40,514 INFO  L527          LassoAnalysis]: Proving termination failed for this template and these settings.
[2021-12-28 09:02:40,552 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0
[2021-12-28 09:02:40,553 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,553 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,554 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)
[2021-12-28 09:02:40,555 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
[2021-12-28 09:02:40,556 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
[2021-12-28 09:02:40,563 INFO  L338   nArgumentSynthesizer]: Template has degree 0.
[2021-12-28 09:02:40,563 INFO  L203   nArgumentSynthesizer]: 1 stem disjuncts
[2021-12-28 09:02:40,563 INFO  L204   nArgumentSynthesizer]: 1 loop disjuncts
[2021-12-28 09:02:40,563 INFO  L205   nArgumentSynthesizer]: 3 template conjuncts.
[2021-12-28 09:02:40,566 INFO  L401   nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications.
[2021-12-28 09:02:40,566 INFO  L402   nArgumentSynthesizer]: A total of 3 supporting invariants were added.
[2021-12-28 09:02:40,579 INFO  L527          LassoAnalysis]: Proving termination failed for this template and these settings.
[2021-12-28 09:02:40,619 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
[2021-12-28 09:02:40,620 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,620 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,621 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)
[2021-12-28 09:02:40,626 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
[2021-12-28 09:02:40,633 INFO  L338   nArgumentSynthesizer]: Template has degree 0.
[2021-12-28 09:02:40,633 INFO  L351   nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation.
[2021-12-28 09:02:40,633 INFO  L203   nArgumentSynthesizer]: 1 stem disjuncts
[2021-12-28 09:02:40,633 INFO  L204   nArgumentSynthesizer]: 1 loop disjuncts
[2021-12-28 09:02:40,633 INFO  L205   nArgumentSynthesizer]: 3 template conjuncts.
[2021-12-28 09:02:40,635 INFO  L401   nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications.
[2021-12-28 09:02:40,635 INFO  L402   nArgumentSynthesizer]: A total of 0 supporting invariants were added.
[2021-12-28 09:02:40,638 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
[2021-12-28 09:02:40,646 INFO  L420   nArgumentSynthesizer]: Found a termination argument, trying to simplify.
[2021-12-28 09:02:40,649 INFO  L443   ModelExtractionUtils]: Simplification made 3 calls to the SMT solver.
[2021-12-28 09:02:40,649 INFO  L444   ModelExtractionUtils]: 3 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero.
[2021-12-28 09:02:40,650 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2021-12-28 09:02:40,650 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-28 09:02:40,661 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)
[2021-12-28 09:02:40,683 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
[2021-12-28 09:02:40,684 INFO  L435   nArgumentSynthesizer]: Simplifying supporting invariants...
[2021-12-28 09:02:40,684 INFO  L438   nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0.
[2021-12-28 09:02:40,685 INFO  L513          LassoAnalysis]: Proved termination.
[2021-12-28 09:02:40,685 INFO  L515          LassoAnalysis]: Termination argument consisting of:
Ranking function 2-nested ranking function:
  f0 = -2*ULTIMATE.start_main_~y~0#1 + 1
  f1 = 2*ULTIMATE.start_main_~x~0#1
Supporting invariants []
[2021-12-28 09:02:40,701 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0
[2021-12-28 09:02:40,704 INFO  L297   tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed
[2021-12-28 09:02:40,729 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-12-28 09:02:40,734 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-28 09:02:40,735 INFO  L263         TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core
[2021-12-28 09:02:40,735 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-12-28 09:02:40,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-28 09:02:40,761 WARN  L261         TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-12-28 09:02:40,762 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-12-28 09:02:40,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-28 09:02:40,780 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 
[2021-12-28 09:02:40,781 INFO  L71    iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand  has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-28 09:02:40,803 INFO  L75    iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand  has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand  has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 19 transitions. Complement of second has 5 states.
[2021-12-28 09:02:40,804 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 
[2021-12-28 09:02:40,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-28 09:02:40,809 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions.
[2021-12-28 09:02:40,810 INFO  L84            BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 1 letters.
[2021-12-28 09:02:40,810 INFO  L116           BuchiAccepts]: Finished buchiAccepts.
[2021-12-28 09:02:40,810 INFO  L84            BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 1 letters.
[2021-12-28 09:02:40,810 INFO  L116           BuchiAccepts]: Finished buchiAccepts.
[2021-12-28 09:02:40,810 INFO  L84            BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 2 letters.
[2021-12-28 09:02:40,811 INFO  L116           BuchiAccepts]: Finished buchiAccepts.
[2021-12-28 09:02:40,811 INFO  L82        GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions.
[2021-12-28 09:02:40,812 INFO  L131   ngComponentsAnalysis]: Automaton has 0 accepting balls. 0
[2021-12-28 09:02:40,814 INFO  L88        GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions.
[2021-12-28 09:02:40,814 INFO  L87         BuchiClosureNwa]: Accepting states before buchiClosure: 0
[2021-12-28 09:02:40,815 INFO  L106        BuchiClosureNwa]: Accepting states after buchiClosure: 0
[2021-12-28 09:02:40,815 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions.
[2021-12-28 09:02:40,815 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-12-28 09:02:40,815 INFO  L681         BuchiCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-12-28 09:02:40,815 INFO  L704         BuchiCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-12-28 09:02:40,815 INFO  L587         BuchiCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-12-28 09:02:40,815 INFO  L425         BuchiCegarLoop]: ======== Iteration 2============
[2021-12-28 09:02:40,816 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions.
[2021-12-28 09:02:40,816 INFO  L131   ngComponentsAnalysis]: Automaton has 0 accepting balls. 0
[2021-12-28 09:02:40,816 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is true
[2021-12-28 09:02:40,820 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:02:40 BoogieIcfgContainer
[2021-12-28 09:02:40,820 INFO  L132        PluginConnector]: ------------------------ END BuchiAutomizer----------------------------
[2021-12-28 09:02:40,821 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-12-28 09:02:40,821 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-12-28 09:02:40,821 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-12-28 09:02:40,822 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:02:39" (3/4) ...
[2021-12-28 09:02:40,825 INFO  L140         WitnessPrinter]: No result that supports witness generation found
[2021-12-28 09:02:40,825 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-12-28 09:02:40,826 INFO  L158              Benchmark]: Toolchain (without parser) took 1601.85ms. Allocated memory was 56.6MB in the beginning and 75.5MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 40.0MB in the end (delta: -3.8MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB.
[2021-12-28 09:02:40,826 INFO  L158              Benchmark]: CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 39.2MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-28 09:02:40,826 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 131.29ms. Allocated memory is still 56.6MB. Free memory was 36.0MB in the beginning and 27.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-12-28 09:02:40,827 INFO  L158              Benchmark]: Boogie Procedure Inliner took 50.91ms. Allocated memory is still 56.6MB. Free memory was 27.5MB in the beginning and 41.1MB in the end (delta: -13.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2021-12-28 09:02:40,827 INFO  L158              Benchmark]: Boogie Preprocessor took 9.47ms. Allocated memory is still 56.6MB. Free memory was 41.1MB in the beginning and 40.3MB in the end (delta: 757.0kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-28 09:02:40,827 INFO  L158              Benchmark]: RCFGBuilder took 183.21ms. Allocated memory is still 56.6MB. Free memory was 40.1MB in the beginning and 32.7MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-12-28 09:02:40,828 INFO  L158              Benchmark]: BuchiAutomizer took 1218.09ms. Allocated memory was 56.6MB in the beginning and 75.5MB in the end (delta: 18.9MB). Free memory was 32.5MB in the beginning and 40.4MB in the end (delta: -7.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB.
[2021-12-28 09:02:40,828 INFO  L158              Benchmark]: Witness Printer took 3.86ms. Allocated memory is still 75.5MB. Free memory was 40.4MB in the beginning and 40.0MB in the end (delta: 351.2kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-28 09:02:40,830 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 39.2MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 131.29ms. Allocated memory is still 56.6MB. Free memory was 36.0MB in the beginning and 27.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 50.91ms. Allocated memory is still 56.6MB. Free memory was 27.5MB in the beginning and 41.1MB in the end (delta: -13.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 9.47ms. Allocated memory is still 56.6MB. Free memory was 41.1MB in the beginning and 40.3MB in the end (delta: 757.0kB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 183.21ms. Allocated memory is still 56.6MB. Free memory was 40.1MB in the beginning and 32.7MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * BuchiAutomizer took 1218.09ms. Allocated memory was 56.6MB in the beginning and 75.5MB in the end (delta: 18.9MB). Free memory was 32.5MB in the beginning and 40.4MB in the end (delta: -7.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB.
 * Witness Printer took 3.86ms. Allocated memory is still 75.5MB. Free memory was 40.4MB in the beginning and 40.0MB in the end (delta: 351.2kB). There was no memory consumed. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if -2 * y + 1 > 0 then 1 else 0), (if -2 * y + 1 > 0 then -2 * y + 1 else 2 * x) and consists of 4 locations. 
  - StatisticsResult: Timing statistics
    BüchiAutomizer plugin needed 1.1s and 2 iterations.  TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1.	Nontrivial modules had stage [1, 0, 0, 0, 0].	InterpolantCoveringCapabilityFinite: 0/0	InterpolantCoveringCapabilityBuchi: 0/0	HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown	LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks:   Lassos: inital17 mio100 ax170 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq182 hnf93 smp100 dnf100 smp100 tf106 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2	LassoNonterminationAnalysisSatUnbounded: 0	LassoNonterminationAnalysisUnsat: 1	LassoNonterminationAnalysisUnknown: 0	LassoNonterminationAnalysisTime: 0.2s	
  - TerminationAnalysisResult: Termination proven
    Buchi Automizer proved that your program is terminating
RESULT: Ultimate proved your program to be correct!
[2021-12-28 09:02:40,852 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
[2021-12-28 09:02:41,068 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE