./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e8d55036 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/GCD4.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 f256d3c992d0432c53ebd28135ea0740504754f166830088ee9ee3a40836ca36 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:15:18,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:15:18,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:15:18,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:15:18,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:15:18,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:15:18,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:15:18,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:15:18,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:15:18,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:15:18,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:15:18,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:15:18,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:15:18,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:15:18,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:15:18,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:15:18,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:15:18,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:15:18,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:15:18,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:15:18,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:15:18,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:15:18,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:15:18,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:15:18,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:15:18,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:15:18,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:15:18,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:15:18,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:15:18,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:15:18,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:15:18,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:15:18,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:15:18,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:15:18,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:15:18,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:15:18,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:15:18,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:15:18,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:15:18,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:15:18,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:15:18,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 23:15:18,799 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:15:18,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:15:18,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:15:18,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:15:18,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:15:18,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:15:18,801 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:15:18,802 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 23:15:18,802 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 23:15:18,802 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 23:15:18,802 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 23:15:18,803 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 23:15:18,803 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 23:15:18,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:15:18,803 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:15:18,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:15:18,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:15:18,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 23:15:18,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 23:15:18,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 23:15:18,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:15:18,804 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 23:15:18,804 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:15:18,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 23:15:18,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:15:18,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:15:18,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:15:18,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:15:18,806 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 23:15:18,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f256d3c992d0432c53ebd28135ea0740504754f166830088ee9ee3a40836ca36 [2023-02-15 23:15:18,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:15:18,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:15:18,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:15:18,995 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:15:18,995 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:15:18,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD4.c [2023-02-15 23:15:19,969 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:15:20,092 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:15:20,092 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD4.c [2023-02-15 23:15:20,095 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae83f930/1ea75a31da96449abac8c236bebcb26d/FLAG5d4bb6eaf [2023-02-15 23:15:20,108 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fae83f930/1ea75a31da96449abac8c236bebcb26d [2023-02-15 23:15:20,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:15:20,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:15:20,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:15:20,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:15:20,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:15:20,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c54675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20, skipping insertion in model container [2023-02-15 23:15:20,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:15:20,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:15:20,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:15:20,236 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:15:20,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:15:20,253 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:15:20,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20 WrapperNode [2023-02-15 23:15:20,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:15:20,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:15:20,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:15:20,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:15:20,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,273 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-02-15 23:15:20,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:15:20,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:15:20,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:15:20,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:15:20,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,289 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:15:20,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:15:20,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:15:20,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:15:20,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (1/1) ... [2023-02-15 23:15:20,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:20,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:20,316 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) [2023-02-15 23:15:20,321 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 [2023-02-15 23:15:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:15:20,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:15:20,426 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:15:20,428 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:15:20,493 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:15:20,497 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:15:20,497 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 23:15:20,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:15:20 BoogieIcfgContainer [2023-02-15 23:15:20,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:15:20,500 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 23:15:20,500 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 23:15:20,503 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 23:15:20,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:15:20,503 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 11:15:20" (1/3) ... [2023-02-15 23:15:20,504 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c1d869a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:15:20, skipping insertion in model container [2023-02-15 23:15:20,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:15:20,504 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:15:20" (2/3) ... [2023-02-15 23:15:20,506 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c1d869a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:15:20, skipping insertion in model container [2023-02-15 23:15:20,506 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:15:20,506 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:15:20" (3/3) ... [2023-02-15 23:15:20,507 INFO L332 chiAutomizerObserver]: Analyzing ICFG GCD4.c [2023-02-15 23:15:20,542 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 23:15:20,543 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 23:15:20,543 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 23:15:20,543 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 23:15:20,543 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 23:15:20,543 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 23:15:20,543 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 23:15:20,543 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 23:15:20,546 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) [2023-02-15 23:15:20,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:15:20,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:15:20,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:15:20,558 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 23:15:20,558 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 23:15:20,559 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 23:15:20,559 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) [2023-02-15 23:15:20,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:15:20,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:15:20,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:15:20,560 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 23:15:20,560 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 23:15:20,565 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L13-2true [2023-02-15 23:15:20,566 INFO L750 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 3#L17-2true assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 9#L17-3true main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 5#L13-2true [2023-02-15 23:15:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 23:15:20,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:20,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95936167] [2023-02-15 23:15:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:20,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:20,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:20,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:20,634 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2023-02-15 23:15:20,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:20,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887807990] [2023-02-15 23:15:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:20,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:20,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:20,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2023-02-15 23:15:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:20,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088857480] [2023-02-15 23:15:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:20,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:20,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:20,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:20,770 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:20,780 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:20,780 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:20,780 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:20,780 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:15:20,780 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:20,780 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:20,781 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:20,781 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2023-02-15 23:15:20,781 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:20,781 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:20,803 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:20,822 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:20,825 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:20,897 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:20,897 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:15:20,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:20,901 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) [2023-02-15 23:15:20,902 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 [2023-02-15 23:15:20,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:20,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:20,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:15:20,924 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: [] [2023-02-15 23:15:20,931 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 [2023-02-15 23:15:20,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:20,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:20,935 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) [2023-02-15 23:15:20,935 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 [2023-02-15 23:15:20,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:20,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:20,953 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:15:20,953 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: [] [2023-02-15 23:15:20,958 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 [2023-02-15 23:15:20,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:20,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:20,959 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) [2023-02-15 23:15:20,961 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 [2023-02-15 23:15:20,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:20,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:20,989 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 [2023-02-15 23:15:20,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:20,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:20,991 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) [2023-02-15 23:15:21,005 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 [2023-02-15 23:15:21,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:15:21,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:21,420 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:15:21,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-02-15 23:15:21,425 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:21,425 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:21,425 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:21,425 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:21,425 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:15:21,425 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:21,425 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:21,425 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:21,425 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2023-02-15 23:15:21,425 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:21,425 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:21,427 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:21,438 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:21,442 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:21,497 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:21,500 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:15:21,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:21,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:21,502 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) [2023-02-15 23:15:21,504 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 [2023-02-15 23:15:21,505 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 [2023-02-15 23:15:21,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:21,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:21,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:21,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:21,515 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:15:21,516 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:15:21,528 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:15:21,531 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 [2023-02-15 23:15:21,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:21,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:21,532 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) [2023-02-15 23:15:21,534 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 [2023-02-15 23:15:21,538 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 [2023-02-15 23:15:21,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:21,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:21,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:21,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:21,546 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:15:21,546 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:15:21,560 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:15:21,563 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 [2023-02-15 23:15:21,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:21,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:21,573 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) [2023-02-15 23:15:21,573 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 [2023-02-15 23:15:21,574 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 [2023-02-15 23:15:21,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:21,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:15:21,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:21,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:21,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:21,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:15:21,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:15:21,599 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:15:21,603 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:15:21,603 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 23:15:21,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:21,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:21,606 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) [2023-02-15 23:15:21,608 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 [2023-02-15 23:15:21,609 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:15:21,609 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:15:21,609 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:15:21,610 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-02-15 23:15:21,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:21,619 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:15:21,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:21,642 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:15:21,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:21,654 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:15:21,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:15:21,752 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-15 23:15:21,753 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:15:21,805 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First 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). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 50 transitions. Complement of second has 10 states. [2023-02-15 23:15:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-02-15 23:15:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:15:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2023-02-15 23:15:21,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2023-02-15 23:15:21,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:21,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2023-02-15 23:15:21,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:21,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2023-02-15 23:15:21,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:21,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2023-02-15 23:15:21,820 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-02-15 23:15:21,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 17 transitions. [2023-02-15 23:15:21,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-15 23:15:21,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-02-15 23:15:21,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2023-02-15 23:15:21,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:15:21,824 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-15 23:15:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2023-02-15 23:15:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-02-15 23:15:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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) [2023-02-15 23:15:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2023-02-15 23:15:21,882 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2023-02-15 23:15:21,883 INFO L428 stractBuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2023-02-15 23:15:21,883 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 23:15:21,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2023-02-15 23:15:21,883 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-02-15 23:15:21,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:15:21,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:15:21,883 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-15 23:15:21,883 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-15 23:15:21,883 INFO L748 eck$LassoCheckResult]: Stem: 97#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 98#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~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; 100#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 90#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 91#L17-2 [2023-02-15 23:15:21,884 INFO L750 eck$LassoCheckResult]: Loop: 91#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 91#L17-2 [2023-02-15 23:15:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:21,884 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2023-02-15 23:15:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:21,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079970961] [2023-02-15 23:15:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:21,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:21,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:21,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:21,894 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2023-02-15 23:15:21,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:21,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824011332] [2023-02-15 23:15:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:21,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:21,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2023-02-15 23:15:21,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:21,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433497551] [2023-02-15 23:15:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:21,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:21,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:21,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:21,949 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:21,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:21,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:21,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:21,949 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:15:21,950 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:21,950 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:21,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:21,950 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2023-02-15 23:15:21,950 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:21,950 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:21,951 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:21,954 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:21,956 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:21,992 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:21,992 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:15:21,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:21,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:15:22,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:22,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:22,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-15 23:15:22,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:15:22,081 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:15:22,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:15:22,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-15 23:15:22,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:22,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:22,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:15:22,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:15:22,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:15:22,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:22,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:22,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-15 23:15:22,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,186 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:15:22,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-15 23:15:22,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:15:22,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:22,283 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:15:22,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,287 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:22,287 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:22,287 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:22,287 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:22,287 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:15:22,287 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,287 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:22,287 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:22,288 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2023-02-15 23:15:22,288 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:22,288 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:22,289 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:22,302 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:22,304 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:22,344 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:22,344 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:15:22,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,361 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:15:22,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-15 23:15:22,365 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 [2023-02-15 23:15:22,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:22,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:22,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:22,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:22,373 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:15:22,373 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:15:22,378 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:15:22,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,382 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:15:22,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-15 23:15:22,386 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 [2023-02-15 23:15:22,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:22,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:22,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:22,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:22,394 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:15:22,394 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:15:22,405 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:15:22,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,411 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:15:22,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-15 23:15:22,414 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 [2023-02-15 23:15:22,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:22,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:15:22,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:22,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:22,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:22,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:15:22,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:15:22,426 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:15:22,428 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:15:22,428 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 23:15:22,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,430 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-02-15 23:15:22,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-15 23:15:22,433 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:15:22,433 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:15:22,433 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:15:22,433 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-02-15 23:15:22,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-02-15 23:15:22,436 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:15:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:22,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:15:22,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:22,467 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 23:15:22,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:15:22,481 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-15 23:15:22,481 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:15:22,494 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 23 transitions. Complement of second has 5 states. [2023-02-15 23:15:22,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 23:15:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:15:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-15 23:15:22,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 1 letters. [2023-02-15 23:15:22,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:22,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2023-02-15 23:15:22,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:22,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-15 23:15:22,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:22,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2023-02-15 23:15:22,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:15:22,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2023-02-15 23:15:22,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-15 23:15:22,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-15 23:15:22,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2023-02-15 23:15:22,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:15:22,498 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2023-02-15 23:15:22,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2023-02-15 23:15:22,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2023-02-15 23:15:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 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) [2023-02-15 23:15:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2023-02-15 23:15:22,499 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 18 transitions. [2023-02-15 23:15:22,499 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2023-02-15 23:15:22,499 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-15 23:15:22,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2023-02-15 23:15:22,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:15:22,500 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:15:22,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:15:22,501 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 23:15:22,501 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 23:15:22,501 INFO L748 eck$LassoCheckResult]: Stem: 158#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 159#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 160#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 156#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 162#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 152#L17-3 [2023-02-15 23:15:22,501 INFO L750 eck$LassoCheckResult]: Loop: 152#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 154#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 151#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 152#L17-3 [2023-02-15 23:15:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:22,501 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 1 times [2023-02-15 23:15:22,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:22,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48488468] [2023-02-15 23:15:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:22,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:22,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:22,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:22,510 INFO L85 PathProgramCache]: Analyzing trace with hash 53214, now seen corresponding path program 2 times [2023-02-15 23:15:22,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:22,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337966836] [2023-02-15 23:15:22,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:22,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:22,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:22,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash 301503641, now seen corresponding path program 1 times [2023-02-15 23:15:22,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:22,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005157193] [2023-02-15 23:15:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:15:22,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:15:22,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005157193] [2023-02-15 23:15:22,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005157193] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:15:22,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523546622] [2023-02-15 23:15:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:22,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:15:22,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,650 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:15:22,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 23:15:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:22,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 23:15:22,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:15:22,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:15:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:15:22,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523546622] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:15:22,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:15:22,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-02-15 23:15:22,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494760877] [2023-02-15 23:15:22,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:15:22,854 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:22,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:22,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:22,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:22,854 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:15:22,855 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,855 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:22,855 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:22,855 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2023-02-15 23:15:22,855 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:22,855 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:22,856 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:22,858 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:22,868 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:22,915 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:22,916 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:15:22,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,918 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-02-15 23:15:22,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-15 23:15:22,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:22,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:22,941 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:15:22,942 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:15:22,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,961 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-02-15 23:15:22,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:22,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:22,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-15 23:15:22,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:22,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:22,998 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-02-15 23:15:23,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-15 23:15:23,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:15:23,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:28,170 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:15:28,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:28,175 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:28,175 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:28,175 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:28,175 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:28,175 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:15:28,175 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:28,175 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:28,175 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:28,175 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2023-02-15 23:15:28,175 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:28,175 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:28,176 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:28,179 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:28,195 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:28,238 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:28,238 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:15:28,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:28,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:28,239 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-02-15 23:15:28,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-02-15 23:15:28,244 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 [2023-02-15 23:15:28,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:28,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:28,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:28,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:28,251 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:15:28,251 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:15:28,266 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:15:28,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:28,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:28,277 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-02-15 23:15:28,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-02-15 23:15:28,281 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 [2023-02-15 23:15:28,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:28,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:15:28,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:28,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:28,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:28,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:15:28,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:15:28,299 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:15:28,302 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:15:28,303 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 23:15:28,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:28,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:28,309 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-02-15 23:15:28,310 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:15:28,310 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:15:28,310 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:15:28,310 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-02-15 23:15:28,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-02-15 23:15:28,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:28,317 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:15:28,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:28,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:15:28,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:28,344 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:15:28,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:15:28,364 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-15 23:15:28,365 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-02-15 23:15:28,389 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) Result 34 states and 53 transitions. Complement of second has 10 states. [2023-02-15 23:15:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-02-15 23:15:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-02-15 23:15:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2023-02-15 23:15:28,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2023-02-15 23:15:28,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:28,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2023-02-15 23:15:28,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:28,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2023-02-15 23:15:28,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:28,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 53 transitions. [2023-02-15 23:15:28,392 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2023-02-15 23:15:28,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 25 states and 36 transitions. [2023-02-15 23:15:28,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-02-15 23:15:28,393 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-02-15 23:15:28,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 36 transitions. [2023-02-15 23:15:28,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:15:28,393 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2023-02-15 23:15:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 36 transitions. [2023-02-15 23:15:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-02-15 23:15:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 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) [2023-02-15 23:15:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2023-02-15 23:15:28,395 INFO L240 hiAutomatonCegarLoop]: Abstraction has 23 states and 34 transitions. [2023-02-15 23:15:28,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:15:28,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 23:15:28,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:15:28,397 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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) [2023-02-15 23:15:28,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:28,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:15:28,497 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2023-02-15 23:15:28,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2023-02-15 23:15:28,498 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2023-02-15 23:15:28,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 27 transitions. [2023-02-15 23:15:28,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-02-15 23:15:28,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-02-15 23:15:28,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2023-02-15 23:15:28,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:15:28,499 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-02-15 23:15:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2023-02-15 23:15:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2023-02-15 23:15:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 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) [2023-02-15 23:15:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2023-02-15 23:15:28,501 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-02-15 23:15:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 23:15:28,501 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-02-15 23:15:28,501 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-15 23:15:28,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2023-02-15 23:15:28,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:15:28,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:15:28,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:15:28,502 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 23:15:28,502 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:15:28,503 INFO L748 eck$LassoCheckResult]: Stem: 365#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 366#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~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; 367#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 369#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 368#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 363#L17-3 [2023-02-15 23:15:28,503 INFO L750 eck$LassoCheckResult]: Loop: 363#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 364#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 360#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 361#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 363#L17-3 [2023-02-15 23:15:28,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 2 times [2023-02-15 23:15:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:28,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519700718] [2023-02-15 23:15:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:28,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:28,507 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:28,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:28,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1649714, now seen corresponding path program 1 times [2023-02-15 23:15:28,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:28,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743419010] [2023-02-15 23:15:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:28,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:28,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:28,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash 756678359, now seen corresponding path program 2 times [2023-02-15 23:15:28,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:28,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210693509] [2023-02-15 23:15:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:28,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:28,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:28,577 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:28,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:28,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:28,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:28,578 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:15:28,578 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:28,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:28,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:28,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2023-02-15 23:15:28,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:28,578 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:28,578 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:28,585 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:28,586 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:28,619 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:28,619 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:15:28,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:28,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:28,620 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-02-15 23:15:28,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:28,625 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:28,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-15 23:15:28,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:28,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:28,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:28,650 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-02-15 23:15:28,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-02-15 23:15:28,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:15:28,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:29,680 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:15:29,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-02-15 23:15:29,685 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:29,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:29,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:29,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:29,685 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:15:29,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:29,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:29,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:29,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2023-02-15 23:15:29,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:29,685 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:29,686 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:29,700 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:29,702 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:29,742 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:29,743 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:15:29,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:29,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:29,744 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-02-15 23:15:29,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-02-15 23:15:29,758 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 [2023-02-15 23:15:29,765 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:29,765 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:15:29,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:29,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:29,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:29,767 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:15:29,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:15:29,784 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:15:29,786 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:15:29,786 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 23:15:29,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:29,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:29,787 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-02-15 23:15:29,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-02-15 23:15:29,791 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:15:29,791 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:15:29,791 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:15:29,791 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-02-15 23:15:29,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:29,796 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:15:29,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:29,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:15:29,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:29,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 23:15:29,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:15:29,854 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-15 23:15:29,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-15 23:15:29,870 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 24 states and 33 transitions. Complement of second has 6 states. [2023-02-15 23:15:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-15 23:15:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-15 23:15:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-15 23:15:29,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2023-02-15 23:15:29,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:29,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2023-02-15 23:15:29,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:29,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2023-02-15 23:15:29,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:29,872 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 33 transitions. [2023-02-15 23:15:29,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-15 23:15:29,873 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 28 transitions. [2023-02-15 23:15:29,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-15 23:15:29,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-02-15 23:15:29,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2023-02-15 23:15:29,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:15:29,873 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-02-15 23:15:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2023-02-15 23:15:29,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2023-02-15 23:15:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 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) [2023-02-15 23:15:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2023-02-15 23:15:29,874 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-02-15 23:15:29,874 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-02-15 23:15:29,875 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-15 23:15:29,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2023-02-15 23:15:29,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-15 23:15:29,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:15:29,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:15:29,875 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-02-15 23:15:29,875 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-15 23:15:29,876 INFO L748 eck$LassoCheckResult]: Stem: 453#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 454#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 457#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 462#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 459#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 458#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 451#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 448#L17-2 [2023-02-15 23:15:29,876 INFO L750 eck$LassoCheckResult]: Loop: 448#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 448#L17-2 [2023-02-15 23:15:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 3 times [2023-02-15 23:15:29,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:29,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065695927] [2023-02-15 23:15:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:29,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:29,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2023-02-15 23:15:29,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:29,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592483030] [2023-02-15 23:15:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:29,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:29,888 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:29,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash 301503643, now seen corresponding path program 4 times [2023-02-15 23:15:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:15:29,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592629898] [2023-02-15 23:15:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:15:29,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:15:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:29,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:15:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:15:29,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:15:29,933 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:29,934 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:29,934 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:29,934 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:29,934 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:15:29,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:29,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:29,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:29,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2023-02-15 23:15:29,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:29,934 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:29,935 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:29,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:29,941 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:29,965 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:29,965 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:15:29,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:29,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:29,967 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-02-15 23:15:29,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-02-15 23:15:29,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:15:29,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:29,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:29,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:30,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:30,001 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-02-15 23:15:30,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-02-15 23:15:30,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:15:30,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:15:30,071 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:15:30,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-02-15 23:15:30,074 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:15:30,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:15:30,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:15:30,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:15:30,074 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:15:30,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:30,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:15:30,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:15:30,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2023-02-15 23:15:30,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:15:30,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:15:30,075 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:30,087 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:30,089 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:15:30,107 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:15:30,107 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:15:30,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:30,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:30,108 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-02-15 23:15:30,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-02-15 23:15:30,114 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 [2023-02-15 23:15:30,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:15:30,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:15:30,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:15:30,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:15:30,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:15:30,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:15:30,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:15:30,136 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:15:30,151 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2023-02-15 23:15:30,151 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-02-15 23:15:30,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:15:30,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:15:30,152 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-02-15 23:15:30,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-02-15 23:15:30,155 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:15:30,156 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:15:30,156 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:15:30,156 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-02-15 23:15:30,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-02-15 23:15:30,159 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:15:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:30,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:15:30,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:30,181 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 23:15:30,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:15:30,182 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-15 23:15:30,182 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-02-15 23:15:30,190 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 21 states and 29 transitions. Complement of second has 5 states. [2023-02-15 23:15:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 23:15:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-02-15 23:15:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-15 23:15:30,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2023-02-15 23:15:30,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:30,191 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:15:30,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:30,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:15:30,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:30,214 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 23:15:30,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:15:30,215 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-15 23:15:30,215 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-02-15 23:15:30,220 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 21 states and 29 transitions. Complement of second has 5 states. [2023-02-15 23:15:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 23:15:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-02-15 23:15:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-15 23:15:30,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2023-02-15 23:15:30,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:30,221 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:15:30,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:15:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:30,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:15:30,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:15:30,248 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 23:15:30,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:15:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:15:30,249 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-15 23:15:30,249 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-02-15 23:15:30,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 23 states and 31 transitions. Complement of second has 4 states. [2023-02-15 23:15:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 23:15:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-02-15 23:15:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-02-15 23:15:30,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2023-02-15 23:15:30,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:30,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2023-02-15 23:15:30,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:30,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2023-02-15 23:15:30,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:15:30,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2023-02-15 23:15:30,262 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 23:15:30,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2023-02-15 23:15:30,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-15 23:15:30,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-15 23:15:30,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-15 23:15:30,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:15:30,263 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:15:30,263 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:15:30,263 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:15:30,263 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-15 23:15:30,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-15 23:15:30,263 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 23:15:30,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-15 23:15:30,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 11:15:30 BoogieIcfgContainer [2023-02-15 23:15:30,268 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 23:15:30,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 23:15:30,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 23:15:30,269 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 23:15:30,269 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:15:20" (3/4) ... [2023-02-15 23:15:30,270 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 23:15:30,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 23:15:30,271 INFO L158 Benchmark]: Toolchain (without parser) took 10160.27ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 74.5MB in the beginning and 63.0MB in the end (delta: 11.5MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2023-02-15 23:15:30,271 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 62.8MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:15:30,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.61ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 65.0MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 23:15:30,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.74ms. Allocated memory is still 117.4MB. Free memory was 65.0MB in the beginning and 63.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:15:30,272 INFO L158 Benchmark]: Boogie Preprocessor took 11.71ms. Allocated memory is still 117.4MB. Free memory was 63.8MB in the beginning and 62.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:15:30,272 INFO L158 Benchmark]: RCFGBuilder took 206.87ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 62.5MB in the beginning and 125.5MB in the end (delta: -63.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2023-02-15 23:15:30,272 INFO L158 Benchmark]: BuchiAutomizer took 9768.52ms. Allocated memory is still 155.2MB. Free memory was 125.5MB in the beginning and 64.0MB in the end (delta: 61.5MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. [2023-02-15 23:15:30,273 INFO L158 Benchmark]: Witness Printer took 2.01ms. Allocated memory is still 155.2MB. Free memory was 64.0MB in the beginning and 63.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:15:30,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 62.8MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.61ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 65.0MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.74ms. Allocated memory is still 117.4MB. Free memory was 65.0MB in the beginning and 63.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.71ms. Allocated memory is still 117.4MB. Free memory was 63.8MB in the beginning and 62.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 206.87ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 62.5MB in the beginning and 125.5MB in the end (delta: -63.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 9768.52ms. Allocated memory is still 155.2MB. Free memory was 125.5MB in the beginning and 64.0MB in the end (delta: 61.5MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. * Witness Printer took 2.01ms. Allocated memory is still 155.2MB. Free memory was 64.0MB in the beginning and 63.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 6 terminating modules (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One deterministic module has affine ranking function xtmp and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.7s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 9.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 41 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax170 hnf100 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf91 smp100 dnf100 smp100 tf107 neg98 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 7.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-15 23:15:30,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:30,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-02-15 23:15:30,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 23:15:30,888 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