./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5fbdf5bf 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/recursive/gcd01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6f4e1dd3818e9d3e8c54653af66359ead501b84 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-31 04:16:07,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 04:16:07,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 04:16:07,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 04:16:07,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 04:16:07,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 04:16:07,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 04:16:07,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 04:16:07,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 04:16:07,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 04:16:07,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 04:16:07,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 04:16:07,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 04:16:07,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 04:16:07,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 04:16:07,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 04:16:07,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 04:16:07,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 04:16:07,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 04:16:07,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 04:16:07,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 04:16:07,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 04:16:07,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 04:16:07,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 04:16:07,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 04:16:07,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 04:16:07,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 04:16:07,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 04:16:07,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 04:16:07,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 04:16:07,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 04:16:07,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 04:16:07,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 04:16:07,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 04:16:07,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 04:16:07,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 04:16:07,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 04:16:07,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 04:16:07,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 04:16:07,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 04:16:07,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 04:16:07,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-31 04:16:07,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 04:16:07,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 04:16:07,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 04:16:07,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 04:16:07,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 04:16:07,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 04:16:07,574 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 04:16:07,574 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 04:16:07,574 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 04:16:07,574 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 04:16:07,575 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 04:16:07,575 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 04:16:07,575 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 04:16:07,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 04:16:07,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-31 04:16:07,576 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 04:16:07,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 04:16:07,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-31 04:16:07,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 04:16:07,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 04:16:07,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 04:16:07,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 04:16:07,577 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-31 04:16:07,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 04:16:07,577 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 04:16:07,577 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 04:16:07,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 04:16:07,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 04:16:07,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 04:16:07,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 04:16:07,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 04:16:07,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 04:16:07,579 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 04:16:07,580 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6f4e1dd3818e9d3e8c54653af66359ead501b84 [2021-08-31 04:16:07,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 04:16:07,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 04:16:07,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 04:16:07,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 04:16:07,913 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 04:16:07,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/gcd01-1.c [2021-08-31 04:16:07,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9110a3e74/341419df81f641f28666b17fbae3f9fb/FLAG38b0430ef [2021-08-31 04:16:08,407 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 04:16:08,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd01-1.c [2021-08-31 04:16:08,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9110a3e74/341419df81f641f28666b17fbae3f9fb/FLAG38b0430ef [2021-08-31 04:16:08,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9110a3e74/341419df81f641f28666b17fbae3f9fb [2021-08-31 04:16:08,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 04:16:08,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 04:16:08,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 04:16:08,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 04:16:08,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 04:16:08,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:16:08" (1/1) ... [2021-08-31 04:16:08,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc0c44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:08, skipping insertion in model container [2021-08-31 04:16:08,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:16:08" (1/1) ... [2021-08-31 04:16:08,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 04:16:08,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 04:16:08,972 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-08-31 04:16:08,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 04:16:08,981 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 04:16:08,994 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-08-31 04:16:08,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 04:16:09,005 INFO L208 MainTranslator]: Completed translation [2021-08-31 04:16:09,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09 WrapperNode [2021-08-31 04:16:09,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 04:16:09,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 04:16:09,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 04:16:09,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 04:16:09,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 04:16:09,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 04:16:09,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 04:16:09,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 04:16:09,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 04:16:09,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 04:16:09,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 04:16:09,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 04:16:09,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (1/1) ... [2021-08-31 04:16:09,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:09,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:09,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:09,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-31 04:16:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-08-31 04:16:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-08-31 04:16:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 04:16:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 04:16:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-31 04:16:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-31 04:16:09,314 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 04:16:09,315 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-31 04:16:09,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:16:09 BoogieIcfgContainer [2021-08-31 04:16:09,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 04:16:09,319 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 04:16:09,319 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 04:16:09,321 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 04:16:09,322 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 04:16:09,322 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 04:16:08" (1/3) ... [2021-08-31 04:16:09,323 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74765c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 04:16:09, skipping insertion in model container [2021-08-31 04:16:09,324 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 04:16:09,324 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:16:09" (2/3) ... [2021-08-31 04:16:09,324 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74765c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 04:16:09, skipping insertion in model container [2021-08-31 04:16:09,324 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 04:16:09,325 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:16:09" (3/3) ... [2021-08-31 04:16:09,326 INFO L389 chiAutomizerObserver]: Analyzing ICFG gcd01-1.c [2021-08-31 04:16:09,396 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 04:16:09,396 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 04:16:09,396 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 04:16:09,396 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 04:16:09,409 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 04:16:09,409 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 04:16:09,409 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 04:16:09,409 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 04:16:09,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-31 04:16:09,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-08-31 04:16:09,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 04:16:09,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 04:16:09,445 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-08-31 04:16:09,445 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-31 04:16:09,445 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 04:16:09,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-31 04:16:09,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-08-31 04:16:09,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 04:16:09,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 04:16:09,448 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-08-31 04:16:09,448 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-31 04:16:09,455 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 11#L32true assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 12#L36true assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 22#L39true call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 23#gcdENTRYtrue [2021-08-31 04:16:09,455 INFO L793 eck$LassoCheckResult]: Loop: 23#gcdENTRYtrue ~y1 := #in~y1;~y2 := #in~y2; 7#L18true assume !(~y1 <= 0 || ~y2 <= 0); 13#L21true assume !(~y1 == ~y2); 19#L24true assume !(~y1 > ~y2); 18#L27true call #t~ret8 := gcd(~y1, ~y2 - ~y1);< 23#gcdENTRYtrue [2021-08-31 04:16:09,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:09,469 INFO L82 PathProgramCache]: Analyzing trace with hash 45873351, now seen corresponding path program 1 times [2021-08-31 04:16:09,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:09,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449205042] [2021-08-31 04:16:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:09,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:09,579 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:09,632 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash 28756482, now seen corresponding path program 1 times [2021-08-31 04:16:09,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:09,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851046734] [2021-08-31 04:16:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:09,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:09,653 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:09,663 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:09,664 INFO L82 PathProgramCache]: Analyzing trace with hash -6988548, now seen corresponding path program 1 times [2021-08-31 04:16:09,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:09,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419431419] [2021-08-31 04:16:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:09,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:09,679 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:09,696 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:09,888 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 04:16:09,889 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 04:16:09,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 04:16:09,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 04:16:09,890 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 04:16:09,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:09,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 04:16:09,890 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 04:16:09,890 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration1_Loop [2021-08-31 04:16:09,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 04:16:09,891 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 04:16:09,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:09,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:09,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:09,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:09,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:09,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:10,004 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 04:16:10,005 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 04:16:10,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:10,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:10,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:10,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-31 04:16:10,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 04:16:10,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:10,038 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 04:16:10,039 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#res=0} Honda state: {gcd_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 04:16:10,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:10,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:10,067 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:10,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-31 04:16:10,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 04:16:10,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:10,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:10,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:10,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:10,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:10,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 04:16:10,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:10,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-31 04:16:10,217 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 04:16:10,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:10,224 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 04:16:10,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 04:16:10,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 04:16:10,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 04:16:10,224 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 04:16:10,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:10,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 04:16:10,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 04:16:10,224 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration1_Loop [2021-08-31 04:16:10,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 04:16:10,224 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 04:16:10,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:10,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:10,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:10,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:10,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:10,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:10,333 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 04:16:10,336 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 04:16:10,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:10,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:10,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:10,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-31 04:16:10,341 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 04:16:10,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:10,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:10,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:10,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:10,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:10,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:10,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:10,365 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 04:16:10,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:10,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:10,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:10,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:10,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-31 04:16:10,445 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 04:16:10,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:10,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:10,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:10,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:10,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:10,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:10,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:10,468 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 04:16:10,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:10,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:10,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:10,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:10,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-31 04:16:10,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 04:16:10,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:10,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:10,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:10,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:10,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:10,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:10,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:10,524 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 04:16:10,538 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 04:16:10,538 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 04:16:10,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:10,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:10,545 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:10,548 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 04:16:10,548 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 04:16:10,548 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 04:16:10,549 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y2) = 1*gcd_#in~y2 Supporting invariants [] [2021-08-31 04:16:10,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-31 04:16:10,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:10,577 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 04:16:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:10,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 04:16:10,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:10,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 04:16:10,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 04:16:10,817 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 04:16:10,821 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:10,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:10,967 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 71 states and 98 transitions. Complement of second has 18 states. [2021-08-31 04:16:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-08-31 04:16:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2021-08-31 04:16:10,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 5 letters. [2021-08-31 04:16:10,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:10,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2021-08-31 04:16:10,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:10,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 10 letters. [2021-08-31 04:16:10,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:10,977 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 98 transitions. [2021-08-31 04:16:10,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 04:16:10,986 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 28 states and 32 transitions. [2021-08-31 04:16:10,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-08-31 04:16:10,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-08-31 04:16:10,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 32 transitions. [2021-08-31 04:16:10,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 04:16:10,988 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-08-31 04:16:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 32 transitions. [2021-08-31 04:16:11,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-08-31 04:16:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-08-31 04:16:11,009 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-08-31 04:16:11,009 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-08-31 04:16:11,010 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 04:16:11,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2021-08-31 04:16:11,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 04:16:11,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 04:16:11,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 04:16:11,011 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-31 04:16:11,011 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-31 04:16:11,011 INFO L791 eck$LassoCheckResult]: Stem: 165#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 166#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 180#L32 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 181#L36 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 170#L39 call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 182#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 173#L18 [2021-08-31 04:16:11,011 INFO L793 eck$LassoCheckResult]: Loop: 173#L18 assume !(~y1 <= 0 || ~y2 <= 0); 174#L21 assume !(~y1 == ~y2); 178#L24 assume ~y1 > ~y2; 167#L25 call #t~ret7 := gcd(~y1 - ~y2, ~y2);< 169#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 173#L18 [2021-08-31 04:16:11,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:11,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1422073881, now seen corresponding path program 1 times [2021-08-31 04:16:11,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:11,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694075952] [2021-08-31 04:16:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:11,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:11,023 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:11,033 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:11,034 INFO L82 PathProgramCache]: Analyzing trace with hash 32573467, now seen corresponding path program 1 times [2021-08-31 04:16:11,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:11,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107206906] [2021-08-31 04:16:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:11,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:11,039 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:11,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:11,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:11,043 INFO L82 PathProgramCache]: Analyzing trace with hash -216647933, now seen corresponding path program 1 times [2021-08-31 04:16:11,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:11,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109044516] [2021-08-31 04:16:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:11,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:11,054 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:11,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:11,156 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 04:16:11,156 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 04:16:11,156 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 04:16:11,157 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 04:16:11,157 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 04:16:11,157 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:11,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 04:16:11,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 04:16:11,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration2_Loop [2021-08-31 04:16:11,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 04:16:11,163 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 04:16:11,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:11,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:11,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:11,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:11,233 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 04:16:11,233 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 04:16:11,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:11,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:11,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:11,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-31 04:16:11,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 04:16:11,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:11,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:11,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:11,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:11,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:11,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-31 04:16:11,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 04:16:11,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:13,052 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 04:16:13,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:13,088 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 04:16:13,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 04:16:13,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 04:16:13,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 04:16:13,088 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 04:16:13,088 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:13,088 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 04:16:13,088 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 04:16:13,088 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration2_Loop [2021-08-31 04:16:13,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 04:16:13,089 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 04:16:13,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:13,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:13,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:13,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:13,173 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 04:16:13,173 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 04:16:13,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:13,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:13,174 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:13,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 04:16:13,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:13,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:13,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:13,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:13,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:13,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:13,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:13,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-31 04:16:13,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 04:16:13,225 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 04:16:13,225 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 04:16:13,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:13,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:13,227 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:13,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-31 04:16:13,230 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 04:16:13,230 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 04:16:13,230 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 04:16:13,230 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y1) = 1*gcd_~y1 Supporting invariants [] [2021-08-31 04:16:13,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:13,250 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 04:16:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:13,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 04:16:13,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:13,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 04:16:13,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 04:16:13,390 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-31 04:16:13,390 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:13,415 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 54 states and 61 transitions. Complement of second has 15 states. [2021-08-31 04:16:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 04:16:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-08-31 04:16:13,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 6 letters. Loop has 5 letters. [2021-08-31 04:16:13,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:13,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-08-31 04:16:13,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:13,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 6 letters. Loop has 10 letters. [2021-08-31 04:16:13,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:13,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 61 transitions. [2021-08-31 04:16:13,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 04:16:13,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 33 states and 37 transitions. [2021-08-31 04:16:13,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-08-31 04:16:13,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-08-31 04:16:13,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2021-08-31 04:16:13,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 04:16:13,449 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-08-31 04:16:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2021-08-31 04:16:13,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2021-08-31 04:16:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-08-31 04:16:13,452 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-08-31 04:16:13,453 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-08-31 04:16:13,453 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 04:16:13,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 28 transitions. [2021-08-31 04:16:13,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-31 04:16:13,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 04:16:13,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 04:16:13,455 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 04:16:13,455 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-31 04:16:13,455 INFO L791 eck$LassoCheckResult]: Stem: 305#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(10);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 306#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9; 321#L32 assume !(main_~m~0 <= 0 || main_~m~0 > 2147483647);main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 322#L36 assume !(main_~n~0 <= 0 || main_~n~0 > 2147483647); 316#L39 call main_#t~ret11 := gcd(main_~m~0, main_~n~0);< 324#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 325#L18 assume !(~y1 <= 0 || ~y2 <= 0); 323#L21 assume !(~y1 == ~y2); 320#L24 assume !(~y1 > ~y2); 308#L27 call #t~ret8 := gcd(~y1, ~y2 - ~y1);< 317#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 312#L18 [2021-08-31 04:16:13,455 INFO L793 eck$LassoCheckResult]: Loop: 312#L18 assume !(~y1 <= 0 || ~y2 <= 0); 313#L21 assume !(~y1 == ~y2); 319#L24 assume ~y1 > ~y2; 307#L25 call #t~ret7 := gcd(~y1 - ~y2, ~y2);< 309#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 312#L18 [2021-08-31 04:16:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:13,456 INFO L82 PathProgramCache]: Analyzing trace with hash -216644988, now seen corresponding path program 2 times [2021-08-31 04:16:13,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:13,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493131840] [2021-08-31 04:16:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:13,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:13,480 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:13,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:13,507 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:13,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:13,508 INFO L82 PathProgramCache]: Analyzing trace with hash 32573467, now seen corresponding path program 2 times [2021-08-31 04:16:13,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:13,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548850714] [2021-08-31 04:16:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:13,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:13,518 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:13,523 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:13,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:13,524 INFO L82 PathProgramCache]: Analyzing trace with hash 201252728, now seen corresponding path program 1 times [2021-08-31 04:16:13,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 04:16:13,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925366510] [2021-08-31 04:16:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 04:16:13,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 04:16:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:13,547 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 04:16:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 04:16:13,561 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 04:16:13,637 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 04:16:13,638 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 04:16:13,638 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 04:16:13,638 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 04:16:13,638 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 04:16:13,638 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:13,638 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 04:16:13,638 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 04:16:13,639 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration3_Loop [2021-08-31 04:16:13,639 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 04:16:13,639 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 04:16:13,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:13,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:13,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:13,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:13,695 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 04:16:13,695 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 04:16:13,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:13,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:13,697 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) [2021-08-31 04:16:13,701 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 [2021-08-31 04:16:13,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 04:16:13,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:13,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 04:16:13,711 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#t~ret7=0} Honda state: {gcd_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 04:16:13,726 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 [2021-08-31 04:16:13,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:13,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:13,728 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) [2021-08-31 04:16:13,729 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 [2021-08-31 04:16:13,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 04:16:13,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:13,804 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 [2021-08-31 04:16:13,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:13,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:13,805 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) [2021-08-31 04:16:13,807 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 [2021-08-31 04:16:13,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 04:16:13,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 04:16:15,539 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 04:16:15,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-08-31 04:16:15,544 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 04:16:15,544 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 04:16:15,544 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 04:16:15,544 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 04:16:15,544 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 04:16:15,544 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:15,544 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 04:16:15,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 04:16:15,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: gcd01-1.c_Iteration3_Loop [2021-08-31 04:16:15,545 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 04:16:15,545 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 04:16:15,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:15,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:15,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:15,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 04:16:15,617 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 04:16:15,617 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 04:16:15,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:15,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:15,618 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) [2021-08-31 04:16:15,621 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 [2021-08-31 04:16:15,622 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 04:16:15,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:15,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:15,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:15,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:15,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:15,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:15,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:15,631 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 04:16:15,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:15,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:15,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:15,648 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) [2021-08-31 04:16:15,649 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 [2021-08-31 04:16:15,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 04:16:15,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 04:16:15,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 04:16:15,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 04:16:15,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 04:16:15,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 04:16:15,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 04:16:15,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 04:16:15,692 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 04:16:15,696 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-31 04:16:15,696 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 04:16:15,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 04:16:15,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 04:16:15,701 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 04:16:15,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-31 04:16:15,715 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 04:16:15,715 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 04:16:15,715 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 04:16:15,715 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y1) = 1*gcd_~y1 Supporting invariants [] [2021-08-31 04:16:15,742 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 [2021-08-31 04:16:15,743 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 04:16:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:15,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-31 04:16:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:15,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-31 04:16:15,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:15,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 04:16:15,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 04:16:15,934 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-31 04:16:15,935 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:15,972 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 51 transitions. Complement of second has 15 states. [2021-08-31 04:16:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 04:16:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-08-31 04:16:15,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-08-31 04:16:15,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:15,975 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 04:16:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:16,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-31 04:16:16,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:16,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 04:16:16,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 04:16:16,107 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-31 04:16:16,107 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:16,141 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 51 transitions. Complement of second has 15 states. [2021-08-31 04:16:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 04:16:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-08-31 04:16:16,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2021-08-31 04:16:16,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:16,143 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-31 04:16:16,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 04:16:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:16,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-31 04:16:16,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 04:16:16,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-31 04:16:16,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 04:16:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 04:16:16,269 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-31 04:16:16,270 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:16,316 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 75 states and 86 transitions. Complement of second has 17 states. [2021-08-31 04:16:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 04:16:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 04:16:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-08-31 04:16:16,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 5 letters. [2021-08-31 04:16:16,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:16,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 16 letters. Loop has 5 letters. [2021-08-31 04:16:16,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:16,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 10 letters. [2021-08-31 04:16:16,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 04:16:16,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 86 transitions. [2021-08-31 04:16:16,328 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 04:16:16,329 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 0 states and 0 transitions. [2021-08-31 04:16:16,329 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-31 04:16:16,329 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-31 04:16:16,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-31 04:16:16,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 04:16:16,329 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 04:16:16,330 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 04:16:16,330 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-31 04:16:16,330 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 04:16:16,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-31 04:16:16,330 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-31 04:16:16,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-31 04:16:16,333 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) at de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData.toString(StatisticsData.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerTimingBenchmark.toString(BuchiAutomizerTimingBenchmark.java:44) at de.uni_freiburg.informatik.ultimate.core.lib.results.StatisticsResult.getLongDescription(StatisticsResult.java:58) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.reportResult(BuchiAutomizerObserver.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-31 04:16:16,336 INFO L158 Benchmark]: Toolchain (without parser) took 7511.93ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 31.7MB in the beginning and 61.6MB in the end (delta: -29.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 04:16:16,336 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 04:16:16,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.09ms. Allocated memory is still 54.5MB. Free memory was 31.4MB in the beginning and 35.6MB in the end (delta: -4.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-08-31 04:16:16,337 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 35.4MB in the beginning and 50.4MB in the end (delta: -15.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-31 04:16:16,337 INFO L158 Benchmark]: Boogie Preprocessor took 32.67ms. Allocated memory is still 67.1MB. Free memory was 50.4MB in the beginning and 49.4MB in the end (delta: 943.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 04:16:16,338 INFO L158 Benchmark]: RCFGBuilder took 240.49ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 40.8MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 04:16:16,338 INFO L158 Benchmark]: BuchiAutomizer took 7015.95ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 40.6MB in the beginning and 61.6MB in the end (delta: -20.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 04:16:16,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.09ms. Allocated memory is still 54.5MB. Free memory was 31.4MB in the beginning and 35.6MB in the end (delta: -4.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.71ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 35.4MB in the beginning and 50.4MB in the end (delta: -15.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.67ms. Allocated memory is still 67.1MB. Free memory was 50.4MB in the beginning and 49.4MB in the end (delta: 943.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.49ms. Allocated memory is still 67.1MB. Free memory was 49.4MB in the beginning and 40.8MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7015.95ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 40.6MB in the beginning and 61.6MB in the end (delta: -20.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(y2) and consists of 6 locations. One deterministic module has affine ranking function y1 and consists of 5 locations. One nondeterministic module has affine ranking function y1 and consists of 5 locations. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6): de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-31 04:16:16,370 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...