./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.04.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-restricted-15/b.04.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 65affd315cd8bea6bfbee2f7260bc7d93c5aef2e3e6cd7e176a59164ccf65361 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:22:46,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:22:46,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:22:46,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:22:46,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:22:46,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:22:46,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:22:46,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:22:46,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:22:46,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:22:46,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:22:46,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:22:46,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:22:46,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:22:46,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:22:46,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:22:46,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:22:46,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:22:46,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:22:46,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:22:46,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:22:46,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:22:46,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:22:46,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:22:46,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:22:46,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:22:46,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:22:46,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:22:46,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:22:46,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:22:46,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:22:46,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:22:46,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:22:46,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:22:46,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:22:46,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:22:46,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:22:46,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:22:46,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:22:46,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:22:46,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:22:46,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-16 09:22:46,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:22:46,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:22:46,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:22:46,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:22:46,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:22:46,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:22:46,628 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:22:46,628 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-16 09:22:46,629 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-16 09:22:46,629 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-16 09:22:46,629 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-16 09:22:46,630 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-16 09:22:46,630 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-16 09:22:46,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:22:46,630 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:22:46,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:22:46,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:22:46,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-16 09:22:46,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-16 09:22:46,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-16 09:22:46,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:22:46,632 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-16 09:22:46,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:22:46,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-16 09:22:46,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:22:46,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:22:46,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:22:46,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:22:46,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:22:46,634 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-16 09:22:46,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65affd315cd8bea6bfbee2f7260bc7d93c5aef2e3e6cd7e176a59164ccf65361 [2021-12-16 09:22:46,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:22:46,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:22:46,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:22:46,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:22:46,916 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:22:46,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.04.c [2021-12-16 09:22:46,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5328a8eed/c96d0e4b0ad84de58aa3df43e79f0d12/FLAG3dc1ac8d7 [2021-12-16 09:22:47,367 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:22:47,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.04.c [2021-12-16 09:22:47,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5328a8eed/c96d0e4b0ad84de58aa3df43e79f0d12/FLAG3dc1ac8d7 [2021-12-16 09:22:47,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5328a8eed/c96d0e4b0ad84de58aa3df43e79f0d12 [2021-12-16 09:22:47,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:22:47,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:22:47,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:22:47,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:22:47,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:22:47,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3410a558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47, skipping insertion in model container [2021-12-16 09:22:47,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:22:47,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:22:47,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:22:47,563 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:22:47,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:22:47,582 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:22:47,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47 WrapperNode [2021-12-16 09:22:47,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:22:47,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:22:47,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:22:47,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:22:47,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,604 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-16 09:22:47,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:22:47,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:22:47,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:22:47,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:22:47,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:22:47,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:22:47,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:22:47,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:22:47,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (1/1) ... [2021-12-16 09:22:47,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:47,648 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 09:22:47,663 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 09:22:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:22:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:22:47,740 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:22:47,743 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:22:47,813 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:22:47,820 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:22:47,820 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 09:22:47,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:22:47 BoogieIcfgContainer [2021-12-16 09:22:47,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:22:47,823 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-16 09:22:47,824 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-16 09:22:47,827 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-16 09:22:47,828 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:22:47,829 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.12 09:22:47" (1/3) ... [2021-12-16 09:22:47,830 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@759fb26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:22:47, skipping insertion in model container [2021-12-16 09:22:47,830 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:22:47,830 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:47" (2/3) ... [2021-12-16 09:22:47,830 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@759fb26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:22:47, skipping insertion in model container [2021-12-16 09:22:47,830 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:22:47,831 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:22:47" (3/3) ... [2021-12-16 09:22:47,832 INFO L388 chiAutomizerObserver]: Analyzing ICFG b.04.c [2021-12-16 09:22:47,881 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-16 09:22:47,881 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-16 09:22:47,881 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-16 09:22:47,881 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-16 09:22:47,882 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-16 09:22:47,882 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-16 09:22:47,882 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-16 09:22:47,882 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-16 09:22:47,895 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) [2021-12-16 09:22:47,912 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-16 09:22:47,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:22:47,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:22:47,917 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:22:47,917 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-16 09:22:47,918 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-16 09:22:47,918 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) [2021-12-16 09:22:47,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-16 09:22:47,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:22:47,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:22:47,920 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:22:47,920 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-16 09:22:47,925 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_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~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;main_~tmp~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L10-2true [2021-12-16 09:22:47,926 INFO L793 eck$LassoCheckResult]: Loop: 4#L10-2true assume !!(main_~x~0#1 > main_~y~0#1);main_~tmp~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1;main_~y~0#1 := main_~tmp~0#1; 4#L10-2true [2021-12-16 09:22:47,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-16 09:22:47,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:47,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128369495] [2021-12-16 09:22:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:47,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:48,006 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:48,022 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-12-16 09:22:48,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:48,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599206135] [2021-12-16 09:22:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:48,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:48,046 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:48,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-16 09:22:48,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:48,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149442913] [2021-12-16 09:22:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:48,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:48,074 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:48,084 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:48,159 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:22:48,160 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:22:48,160 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:22:48,160 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:22:48,160 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:22:48,160 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:48,160 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:22:48,161 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:22:48,161 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.04.c_Iteration1_Loop [2021-12-16 09:22:48,161 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:22:48,161 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:22:48,174 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 09:22:48,180 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 09:22:48,184 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 09:22:48,261 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:22:48,267 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:22:48,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:48,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:48,286 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 09:22:48,291 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 09:22:48,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:48,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:48,319 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:22:48,319 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 09:22:48,345 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 09:22:48,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:48,352 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 09:22:48,353 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 09:22:48,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:48,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:48,378 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:22:48,378 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 09:22:48,403 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 09:22:48,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:48,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:48,405 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 09:22:48,406 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 09:22:48,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:48,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:48,465 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 09:22:48,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:48,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:48,467 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 09:22:48,471 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 09:22:48,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:22:48,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:54,302 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:22:54,308 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 09:22:54,309 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:22:54,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:22:54,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:22:54,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:22:54,309 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:22:54,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,309 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:22:54,309 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:22:54,309 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.04.c_Iteration1_Loop [2021-12-16 09:22:54,309 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:22:54,309 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:22:54,311 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 09:22:54,321 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 09:22:54,328 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 09:22:54,410 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:22:54,414 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:22:54,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,420 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 09:22:54,425 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 09:22:54,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-16 09:22:54,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:54,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:54,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:54,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:54,442 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-16 09:22:54,443 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-16 09:22:54,463 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:22:54,479 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 09:22:54,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,483 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 09:22:54,487 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 09:22:54,523 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 09:22:54,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:54,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:54,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:54,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:54,533 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-16 09:22:54,533 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-16 09:22:54,544 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:22:54,561 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 09:22:54,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,563 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 09:22:54,570 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 09:22:54,570 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 09:22:54,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:54,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:22:54,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:54,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:54,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:54,579 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:22:54,579 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:22:54,595 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:22:54,598 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:22:54,599 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-16 09:22:54,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,603 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 09:22:54,604 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 09:22:54,652 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:22:54,653 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:22:54,653 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:22:54,653 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-16 09:22:54,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-16 09:22:54,673 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:22:54,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:22:54,703 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:22:54,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:22:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:22:54,714 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:22:54,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:22:54,715 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 09:22:54,739 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 09:22:54,741 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) [2021-12-16 09:22:54,785 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. [2021-12-16 09:22:54,787 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 09:22:54,791 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) [2021-12-16 09:22:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-12-16 09:22:54,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 1 letters. [2021-12-16 09:22:54,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:54,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 1 letters. [2021-12-16 09:22:54,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:54,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 2 letters. [2021-12-16 09:22:54,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:54,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2021-12-16 09:22:54,795 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:22:54,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2021-12-16 09:22:54,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-16 09:22:54,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-16 09:22:54,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-16 09:22:54,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 09:22:54,803 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:22:54,803 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:22:54,803 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:22:54,803 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-16 09:22:54,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-16 09:22:54,804 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:22:54,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-16 09:22:54,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.12 09:22:54 BoogieIcfgContainer [2021-12-16 09:22:54,809 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-16 09:22:54,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 09:22:54,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 09:22:54,810 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 09:22:54,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:22:47" (3/4) ... [2021-12-16 09:22:54,813 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 09:22:54,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 09:22:54,814 INFO L158 Benchmark]: Toolchain (without parser) took 7418.37ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 55.7MB in the beginning and 38.2MB in the end (delta: 17.5MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2021-12-16 09:22:54,814 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 27.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:22:54,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.34ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 55.7MB in the beginning and 93.4MB in the end (delta: -37.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:22:54,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.54ms. Allocated memory is still 115.3MB. Free memory was 93.4MB in the beginning and 92.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:22:54,828 INFO L158 Benchmark]: Boogie Preprocessor took 12.44ms. Allocated memory is still 115.3MB. Free memory was 92.1MB in the beginning and 91.3MB in the end (delta: 787.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 09:22:54,829 INFO L158 Benchmark]: RCFGBuilder took 204.00ms. Allocated memory is still 115.3MB. Free memory was 91.3MB in the beginning and 83.6MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-16 09:22:54,829 INFO L158 Benchmark]: BuchiAutomizer took 6985.65ms. Allocated memory is still 115.3MB. Free memory was 83.5MB in the beginning and 38.9MB in the end (delta: 44.7MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2021-12-16 09:22:54,843 INFO L158 Benchmark]: Witness Printer took 3.15ms. Allocated memory is still 115.3MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:22:54,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 27.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.34ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 55.7MB in the beginning and 93.4MB in the end (delta: -37.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.54ms. Allocated memory is still 115.3MB. Free memory was 93.4MB in the beginning and 92.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.44ms. Allocated memory is still 115.3MB. Free memory was 92.1MB in the beginning and 91.3MB in the end (delta: 787.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 204.00ms. Allocated memory is still 115.3MB. Free memory was 91.3MB in the beginning and 83.6MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 6985.65ms. Allocated memory is still 115.3MB. Free memory was 83.5MB in the beginning and 38.9MB in the end (delta: 44.7MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 3.15ms. Allocated memory is still 115.3MB. Free memory is still 38.2MB. 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 affine ranking function -1 * y + x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 6.7s. 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, 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: inital14 mio100 ax185 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf88 smp100 dnf100 smp100 tf108 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-16 09:22:54,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-16 09:22:55,097 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