./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/2Nested-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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/2Nested-1.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 98e3578cd96fe8b8eee528450509f182c2f5e45fbe2813a1c7e5d95c43606358 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:18:42,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:18:42,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:18:42,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:18:42,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:18:42,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:18:42,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:18:42,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:18:42,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:18:42,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:18:42,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:18:42,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:18:42,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:18:42,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:18:42,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:18:42,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:18:42,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:18:42,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:18:42,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:18:42,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:18:42,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:18:42,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:18:42,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:18:42,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:18:42,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:18:42,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:18:42,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:18:42,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:18:42,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:18:42,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:18:42,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:18:42,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:18:42,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:18:42,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:18:42,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:18:42,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:18:42,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:18:42,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:18:42,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:18:42,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:18:42,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:18:42,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-16 09:18:42,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:18:42,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:18:42,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:18:42,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:18:42,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:18:42,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:18:42,529 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:18:42,530 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-16 09:18:42,530 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-16 09:18:42,530 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-16 09:18:42,531 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-16 09:18:42,531 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-16 09:18:42,531 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-16 09:18:42,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:18:42,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:18:42,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:18:42,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:18:42,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-16 09:18:42,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-16 09:18:42,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-16 09:18:42,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:18:42,533 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-16 09:18:42,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:18:42,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-16 09:18:42,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:18:42,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:18:42,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:18:42,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:18:42,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:18:42,536 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-16 09:18:42,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98e3578cd96fe8b8eee528450509f182c2f5e45fbe2813a1c7e5d95c43606358 [2021-12-16 09:18:42,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:18:42,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:18:42,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:18:42,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:18:42,765 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:18:42,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/2Nested-1.c [2021-12-16 09:18:42,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad1610428/ae2aa14d380948728524b418fcc23b9e/FLAG0bb7fef80 [2021-12-16 09:18:43,183 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:18:43,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/2Nested-1.c [2021-12-16 09:18:43,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad1610428/ae2aa14d380948728524b418fcc23b9e/FLAG0bb7fef80 [2021-12-16 09:18:43,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad1610428/ae2aa14d380948728524b418fcc23b9e [2021-12-16 09:18:43,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:18:43,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:18:43,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:18:43,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:18:43,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:18:43,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17cdcbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43, skipping insertion in model container [2021-12-16 09:18:43,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:18:43,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:18:43,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:18:43,781 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:18:43,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:18:43,809 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:18:43,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43 WrapperNode [2021-12-16 09:18:43,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:18:43,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:18:43,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:18:43,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:18:43,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,836 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2021-12-16 09:18:43,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:18:43,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:18:43,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:18:43,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:18:43,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:18:43,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:18:43,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:18:43,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:18:43,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (1/1) ... [2021-12-16 09:18:43,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:43,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:43,879 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) [2021-12-16 09:18:43,896 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 [2021-12-16 09:18:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:18:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:18:43,969 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:18:43,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:18:44,030 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:18:44,035 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:18:44,035 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 09:18:44,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:18:44 BoogieIcfgContainer [2021-12-16 09:18:44,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:18:44,037 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-16 09:18:44,037 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-16 09:18:44,040 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-16 09:18:44,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:18:44,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.12 09:18:43" (1/3) ... [2021-12-16 09:18:44,041 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78058ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:18:44, skipping insertion in model container [2021-12-16 09:18:44,041 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:18:44,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:18:43" (2/3) ... [2021-12-16 09:18:44,042 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@78058ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:18:44, skipping insertion in model container [2021-12-16 09:18:44,042 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:18:44,042 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:18:44" (3/3) ... [2021-12-16 09:18:44,043 INFO L388 chiAutomizerObserver]: Analyzing ICFG 2Nested-1.c [2021-12-16 09:18:44,090 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-16 09:18:44,091 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-16 09:18:44,091 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-16 09:18:44,091 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-16 09:18:44,091 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-16 09:18:44,091 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-16 09:18:44,091 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-16 09:18:44,091 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-16 09:18:44,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2021-12-16 09:18:44,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-16 09:18:44,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:18:44,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:18:44,120 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-16 09:18:44,120 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-16 09:18:44,120 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-16 09:18:44,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2021-12-16 09:18:44,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-16 09:18:44,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:18:44,121 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:18:44,121 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-16 09:18:44,121 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-16 09:18:44,126 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#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 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 7#L21true assume !!(main_~x~0#1 <= 65534); 4#L22true assume !!(main_~y~0#1 <= 65534); 11#L24true assume !!(main_~y~0#1 >= -65534); 5#L25-2true [2021-12-16 09:18:44,126 INFO L793 eck$LassoCheckResult]: Loop: 5#L25-2true assume !!(main_~x~0#1 >= 0);main_~x~0#1 := main_~x~0#1 + main_~y~0#1;main_~y~0#1 := main_~y~0#1 - 1; 5#L25-2true [2021-12-16 09:18:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:18:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2021-12-16 09:18:44,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:18:44,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178996430] [2021-12-16 09:18:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:18:44,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:18:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:18:44,197 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:18:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:18:44,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:18:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:18:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2021-12-16 09:18:44,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:18:44,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548566641] [2021-12-16 09:18:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:18:44,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:18:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:18:44,240 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:18:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:18:44,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:18:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:18:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash 889571345, now seen corresponding path program 1 times [2021-12-16 09:18:44,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:18:44,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520225538] [2021-12-16 09:18:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:18:44,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:18:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:18:44,273 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:18:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:18:44,284 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:18:44,392 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:18:44,392 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:18:44,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:18:44,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:18:44,393 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:18:44,393 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,393 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:18:44,393 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:18:44,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: 2Nested-1.c_Iteration1_Loop [2021-12-16 09:18:44,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:18:44,394 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:18:44,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:18:44,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:18:44,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:18:44,477 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:18:44,478 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:18:44,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:44,481 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) [2021-12-16 09:18:44,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:18:44,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:18:44,500 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 [2021-12-16 09:18:44,504 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:18:44,505 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: [] [2021-12-16 09:18:44,531 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 [2021-12-16 09:18:44,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:44,533 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) [2021-12-16 09:18:44,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:18:44,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:18:44,552 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 [2021-12-16 09:18:44,567 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:18:44,568 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: [] [2021-12-16 09:18:44,593 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 [2021-12-16 09:18:44,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:44,595 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) [2021-12-16 09:18:44,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:18:44,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:18:44,612 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 [2021-12-16 09:18:44,646 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 [2021-12-16 09:18:44,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:44,648 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) [2021-12-16 09:18:44,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:18:44,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:18:44,673 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 [2021-12-16 09:18:44,751 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:18:44,757 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 [2021-12-16 09:18:44,757 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:18:44,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:18:44,757 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:18:44,757 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:18:44,757 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:18:44,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:18:44,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:18:44,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: 2Nested-1.c_Iteration1_Loop [2021-12-16 09:18:44,758 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:18:44,758 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:18:44,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:18:44,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:18:44,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:18:44,843 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:18:44,847 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:18:44,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:44,850 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) [2021-12-16 09:18:44,860 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 [2021-12-16 09:18:44,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:18:44,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:18:44,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:18:44,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:18:44,871 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 [2021-12-16 09:18:44,875 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-16 09:18:44,875 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-16 09:18:44,892 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:18:44,907 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 [2021-12-16 09:18:44,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:44,909 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) [2021-12-16 09:18:44,910 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 [2021-12-16 09:18:44,915 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 [2021-12-16 09:18:44,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:18:44,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:18:44,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:18:44,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:18:44,936 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-16 09:18:44,936 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-16 09:18:44,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:18:44,977 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 [2021-12-16 09:18:44,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:44,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:44,978 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) [2021-12-16 09:18:44,984 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 [2021-12-16 09:18:44,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:18:44,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:18:44,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:18:44,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:18:44,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:18:44,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:18:44,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:18:44,998 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 [2021-12-16 09:18:45,031 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:18:45,056 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 [2021-12-16 09:18:45,056 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-12-16 09:18:45,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:45,059 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) [2021-12-16 09:18:45,075 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 [2021-12-16 09:18:45,078 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 [2021-12-16 09:18:45,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:18:45,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:18:45,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:18:45,083 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-16 09:18:45,086 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-12-16 09:18:45,087 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-12-16 09:18:45,103 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:18:45,128 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 [2021-12-16 09:18:45,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:45,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:45,130 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) [2021-12-16 09:18:45,132 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 [2021-12-16 09:18:45,133 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 [2021-12-16 09:18:45,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:18:45,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:18:45,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:18:45,143 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-16 09:18:45,147 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-12-16 09:18:45,147 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-12-16 09:18:45,162 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:18:45,188 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 [2021-12-16 09:18:45,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:45,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:45,189 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) [2021-12-16 09:18:45,198 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 [2021-12-16 09:18:45,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:18:45,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:18:45,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:18:45,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:18:45,206 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-16 09:18:45,208 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-12-16 09:18:45,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:18:45,211 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 [2021-12-16 09:18:45,227 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:18:45,231 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:18:45,231 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-16 09:18:45,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:18:45,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:18:45,234 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) [2021-12-16 09:18:45,241 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 [2021-12-16 09:18:45,242 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:18:45,242 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:18:45,243 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:18:45,243 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 + 1 Supporting invariants [] [2021-12-16 09:18:45,264 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 [2021-12-16 09:18:45,266 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:18:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:18:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:18:45,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:18:45,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:18:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:18:45,326 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:18:45,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:18:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:18:45,351 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 [2021-12-16 09:18:45,352 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:18:45,377 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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). Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 27 transitions. Complement of second has 5 states. [2021-12-16 09:18:45,378 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 [2021-12-16 09:18:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:18:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-16 09:18:45,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 5 letters. Loop has 1 letters. [2021-12-16 09:18:45,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:18:45,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-16 09:18:45,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:18:45,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-16 09:18:45,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:18:45,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2021-12-16 09:18:45,388 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:18:45,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-12-16 09:18:45,391 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-16 09:18:45,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-16 09:18:45,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-16 09:18:45,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 09:18:45,392 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:18:45,392 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:18:45,392 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:18:45,392 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-16 09:18:45,392 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-16 09:18:45,393 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:18:45,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-16 09:18:45,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.12 09:18:45 BoogieIcfgContainer [2021-12-16 09:18:45,399 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-16 09:18:45,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 09:18:45,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 09:18:45,400 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 09:18:45,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:18:44" (3/4) ... [2021-12-16 09:18:45,402 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 09:18:45,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 09:18:45,403 INFO L158 Benchmark]: Toolchain (without parser) took 1776.14ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 71.3MB in the beginning and 88.1MB in the end (delta: -16.8MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-12-16 09:18:45,404 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 60.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:18:45,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.04ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 79.9MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:18:45,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.86ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 78.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:18:45,405 INFO L158 Benchmark]: Boogie Preprocessor took 13.83ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.5MB in the end (delta: 959.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 09:18:45,406 INFO L158 Benchmark]: RCFGBuilder took 184.62ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 69.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:18:45,406 INFO L158 Benchmark]: BuchiAutomizer took 1361.80ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 69.2MB in the beginning and 88.3MB in the end (delta: -19.1MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2021-12-16 09:18:45,407 INFO L158 Benchmark]: Witness Printer took 3.34ms. Allocated memory is still 125.8MB. Free memory was 88.3MB in the beginning and 88.1MB in the end (delta: 175.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:18:45,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 60.4MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.04ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 79.9MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.86ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 78.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.83ms. Allocated memory is still 104.9MB. Free memory was 78.5MB in the beginning and 77.5MB in the end (delta: 959.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 184.62ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 69.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1361.80ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 69.2MB in the beginning and 88.3MB in the end (delta: -19.1MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 3.34ms. Allocated memory is still 125.8MB. Free memory was 88.3MB in the beginning and 88.1MB in the end (delta: 175.2kB). 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 + 1) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 16 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, 13 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms 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! [2021-12-16 09:18:45,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-16 09:18:45,640 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE