./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/egcd-both-t.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 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-nla/egcd-both-t.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash e7efe18bdab4f1a3c265c6e5c60639885ed9cc4b50c9311d2c96f86da4a31387 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:59:37,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:59:37,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:59:37,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:59:37,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:59:37,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:59:37,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:59:37,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:59:37,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:59:37,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:59:37,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:59:37,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:59:37,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:59:37,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:59:37,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:59:37,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:59:37,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:59:37,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:59:37,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:59:37,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:59:37,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:59:37,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:59:37,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:59:37,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:59:37,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:59:37,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:59:37,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:59:37,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:59:37,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:59:37,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:59:37,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:59:37,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:59:37,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:59:37,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:59:37,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:59:37,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:59:37,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:59:37,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:59:37,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:59:37,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:59:37,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:59:37,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 16:59:37,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:59:37,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:59:37,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:59:37,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:59:37,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:59:37,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:59:37,732 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:59:37,732 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 16:59:37,733 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 16:59:37,733 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 16:59:37,733 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 16:59:37,734 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 16:59:37,734 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 16:59:37,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:59:37,734 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:59:37,734 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:59:37,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:59:37,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:59:37,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:59:37,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 16:59:37,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 16:59:37,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 16:59:37,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:59:37,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:59:37,736 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 16:59:37,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:59:37,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 16:59:37,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:59:37,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:59:37,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:59:37,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:59:37,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:59:37,739 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 16:59:37,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7efe18bdab4f1a3c265c6e5c60639885ed9cc4b50c9311d2c96f86da4a31387 [2021-12-15 16:59:37,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:59:37,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:59:37,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:59:37,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:59:37,982 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:59:37,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/egcd-both-t.c [2021-12-15 16:59:38,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9609a3d2e/1674ab8d5a3944dfbc31d0d73e2e304f/FLAG58a3a7856 [2021-12-15 16:59:38,416 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:59:38,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/egcd-both-t.c [2021-12-15 16:59:38,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9609a3d2e/1674ab8d5a3944dfbc31d0d73e2e304f/FLAG58a3a7856 [2021-12-15 16:59:38,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9609a3d2e/1674ab8d5a3944dfbc31d0d73e2e304f [2021-12-15 16:59:38,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:59:38,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:59:38,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:38,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:59:38,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:59:38,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f8577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38, skipping insertion in model container [2021-12-15 16:59:38,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:59:38,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:59:38,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:38,610 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:59:38,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:38,631 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:59:38,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38 WrapperNode [2021-12-15 16:59:38,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:38,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:38,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:59:38,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:59:38,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,653 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2021-12-15 16:59:38,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:38,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:59:38,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:59:38,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:59:38,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:59:38,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:59:38,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:59:38,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:59:38,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (1/1) ... [2021-12-15 16:59:38,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 16:59:38,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:38,704 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) [2021-12-15 16:59:38,731 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 [2021-12-15 16:59:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:59:38,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:59:38,794 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:59:38,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:59:38,861 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:59:38,866 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:59:38,866 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 16:59:38,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:38 BoogieIcfgContainer [2021-12-15 16:59:38,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:59:38,869 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 16:59:38,869 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 16:59:38,872 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 16:59:38,872 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:38,872 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 04:59:38" (1/3) ... [2021-12-15 16:59:38,873 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29dd9bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:38, skipping insertion in model container [2021-12-15 16:59:38,873 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:38,874 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:38" (2/3) ... [2021-12-15 16:59:38,874 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29dd9bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:38, skipping insertion in model container [2021-12-15 16:59:38,874 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:38,874 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:38" (3/3) ... [2021-12-15 16:59:38,875 INFO L388 chiAutomizerObserver]: Analyzing ICFG egcd-both-t.c [2021-12-15 16:59:38,913 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 16:59:38,913 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 16:59:38,913 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 16:59:38,913 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 16:59:38,913 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 16:59:38,914 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 16:59:38,914 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 16:59:38,914 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 16:59:38,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:59:38,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-15 16:59:38,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:38,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:38,942 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-15 16:59:38,943 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-15 16:59:38,943 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 16:59:38,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:59:38,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-15 16:59:38,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:38,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:38,945 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-15 16:59:38,945 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-15 16:59:38,951 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#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_~a~0#1, main_~b~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~s~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~s~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; 6#L25true assume main_~x~0#1 >= 1 && main_~y~0#1 >= 1;main_~a~0#1 := main_~x~0#1;main_~b~0#1 := main_~y~0#1;main_~p~0#1 := 1;main_~q~0#1 := 0;main_~r~0#1 := 0;main_~s~0#1 := 1; 10#L38-2true [2021-12-15 16:59:38,951 INFO L793 eck$LassoCheckResult]: Loop: 10#L38-2true assume !!(main_~y~0#1 * main_~r~0#1 + main_~x~0#1 * main_~p~0#1 != main_~x~0#1 * main_~q~0#1 + main_~y~0#1 * main_~s~0#1); 8#L38true assume main_~a~0#1 > main_~b~0#1;main_~a~0#1 := main_~a~0#1 - main_~b~0#1;main_~p~0#1 := main_~p~0#1 - main_~q~0#1;main_~r~0#1 := main_~r~0#1 - main_~s~0#1; 10#L38-2true [2021-12-15 16:59:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-15 16:59:38,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:38,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132060323] [2021-12-15 16:59:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:38,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,081 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,107 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1412, now seen corresponding path program 1 times [2021-12-15 16:59:39,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:39,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014445436] [2021-12-15 16:59:39,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:39,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:39,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197532607] [2021-12-15 16:59:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:39,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:39,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:59:39,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 16:59:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,182 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,205 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash 28693989, now seen corresponding path program 1 times [2021-12-15 16:59:39,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:39,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258968751] [2021-12-15 16:59:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:39,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 16:59:39,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583598384] [2021-12-15 16:59:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:39,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:59:39,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:39,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:59:39,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 16:59:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,280 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:39,291 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:39,389 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:855) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 16:59:39,395 INFO L158 Benchmark]: Toolchain (without parser) took 959.50ms. Allocated memory is still 100.7MB. Free memory was 70.1MB in the beginning and 45.4MB in the end (delta: 24.7MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,398 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:39,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.75ms. Allocated memory is still 100.7MB. Free memory was 70.1MB in the beginning and 78.3MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,399 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.31ms. Allocated memory is still 100.7MB. Free memory was 77.7MB in the beginning and 76.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:39,400 INFO L158 Benchmark]: Boogie Preprocessor took 13.63ms. Allocated memory is still 100.7MB. Free memory was 76.5MB in the beginning and 75.6MB in the end (delta: 902.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,401 INFO L158 Benchmark]: RCFGBuilder took 199.97ms. Allocated memory is still 100.7MB. Free memory was 75.6MB in the beginning and 67.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,402 INFO L158 Benchmark]: BuchiAutomizer took 524.48ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 45.4MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 16:59:39,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.75ms. Allocated memory is still 100.7MB. Free memory was 70.1MB in the beginning and 78.3MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.31ms. Allocated memory is still 100.7MB. Free memory was 77.7MB in the beginning and 76.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.63ms. Allocated memory is still 100.7MB. Free memory was 76.5MB in the beginning and 75.6MB in the end (delta: 902.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 199.97ms. Allocated memory is still 100.7MB. Free memory was 75.6MB in the beginning and 67.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 524.48ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 45.4MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 16:59:39,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 16:59:39,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 16:59:39,856 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 Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable