./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/GCD4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f256d3c992d0432c53ebd28135ea0740504754f166830088ee9ee3a40836ca36 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:10:42,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:10:42,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:10:42,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:10:42,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:10:42,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:10:42,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:10:42,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:10:42,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:10:42,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:10:42,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:10:42,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:10:42,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:10:42,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:10:42,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:10:42,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:10:42,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:10:42,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:10:42,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:10:42,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:10:42,187 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:10:42,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:10:42,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:10:42,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:10:42,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:10:42,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:10:42,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:10:42,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:10:42,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:10:42,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:10:42,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:10:42,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:10:42,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:10:42,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:10:42,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:10:42,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:10:42,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:10:42,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:10:42,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:10:42,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:10:42,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:10:42,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:10:42,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:10:42,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:10:42,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:10:42,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:10:42,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:10:42,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:10:42,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:10:42,213 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:10:42,214 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:10:42,214 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:10:42,214 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:10:42,214 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:10:42,214 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:10:42,214 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:10:42,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:10:42,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:10:42,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:10:42,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:10:42,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:10:42,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:10:42,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:10:42,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:10:42,216 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:10:42,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:10:42,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:10:42,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:10:42,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:10:42,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:10:42,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:10:42,218 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:10:42,218 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f256d3c992d0432c53ebd28135ea0740504754f166830088ee9ee3a40836ca36 [2022-07-13 03:10:42,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:10:42,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:10:42,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:10:42,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:10:42,417 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:10:42,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD4.c [2022-07-13 03:10:42,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68147ec2b/f675b86b86f54becbdc9261ce93d9009/FLAGea9d779f9 [2022-07-13 03:10:42,813 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:10:42,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD4.c [2022-07-13 03:10:42,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68147ec2b/f675b86b86f54becbdc9261ce93d9009/FLAGea9d779f9 [2022-07-13 03:10:42,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68147ec2b/f675b86b86f54becbdc9261ce93d9009 [2022-07-13 03:10:42,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:10:42,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:10:42,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:10:42,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:10:42,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:10:42,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77096141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42, skipping insertion in model container [2022-07-13 03:10:42,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:10:42,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:10:42,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:10:42,933 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:10:42,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:10:42,946 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:10:42,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42 WrapperNode [2022-07-13 03:10:42,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:10:42,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:10:42,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:10:42,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:10:42,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,963 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2022-07-13 03:10:42,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:10:42,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:10:42,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:10:42,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:10:42,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:10:42,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:10:42,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:10:42,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:10:42,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (1/1) ... [2022-07-13 03:10:42,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:42,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:43,001 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) [2022-07-13 03:10:43,003 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 [2022-07-13 03:10:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:10:43,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:10:43,063 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:10:43,064 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:10:43,148 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:10:43,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:10:43,154 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 03:10:43,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:43 BoogieIcfgContainer [2022-07-13 03:10:43,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:10:43,165 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:10:43,166 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:10:43,168 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:10:43,169 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:43,169 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:10:42" (1/3) ... [2022-07-13 03:10:43,169 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77f601ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:10:43, skipping insertion in model container [2022-07-13 03:10:43,170 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:43,170 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:42" (2/3) ... [2022-07-13 03:10:43,170 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77f601ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:10:43, skipping insertion in model container [2022-07-13 03:10:43,170 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:43,171 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:43" (3/3) ... [2022-07-13 03:10:43,174 INFO L354 chiAutomizerObserver]: Analyzing ICFG GCD4.c [2022-07-13 03:10:43,211 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:10:43,212 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:10:43,212 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:10:43,212 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:10:43,212 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:10:43,212 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:10:43,212 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:10:43,212 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:10:43,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:43,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:10:43,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:43,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:43,241 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:10:43,241 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:43,241 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:10:43,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:43,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:10:43,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:43,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:43,253 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:10:43,253 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:43,259 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L13-2true [2022-07-13 03:10:43,259 INFO L754 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 3#L17-2true assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 9#L17-3true main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 5#L13-2true [2022-07-13 03:10:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:43,267 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:10:43,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:43,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830550974] [2022-07-13 03:10:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:43,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:43,330 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:43,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:43,364 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-07-13 03:10:43,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:43,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065593057] [2022-07-13 03:10:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:43,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:43,379 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:43,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:43,388 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2022-07-13 03:10:43,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:43,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222708592] [2022-07-13 03:10:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:43,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:43,401 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:43,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:43,531 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:43,532 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:43,532 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:43,532 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:43,532 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:43,532 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:43,532 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:43,532 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:43,532 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2022-07-13 03:10:43,532 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:43,533 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:43,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:43,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:43,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:43,655 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:43,656 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:43,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:43,672 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) [2022-07-13 03:10:43,675 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 [2022-07-13 03:10:43,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:43,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:43,693 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:43,693 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:43,708 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 [2022-07-13 03:10:43,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:43,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:43,710 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) [2022-07-13 03:10:43,711 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 [2022-07-13 03:10:43,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:43,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:43,733 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:43,734 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:43,748 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 [2022-07-13 03:10:43,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:43,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:43,750 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) [2022-07-13 03:10:43,751 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 [2022-07-13 03:10:43,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:43,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:43,786 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 [2022-07-13 03:10:43,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:43,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:43,792 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) [2022-07-13 03:10:43,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:43,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:43,843 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 [2022-07-13 03:10:47,022 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:47,026 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 [2022-07-13 03:10:47,026 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:47,027 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:47,027 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:47,027 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:47,027 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:47,027 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,027 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:47,027 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:47,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2022-07-13 03:10:47,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:47,027 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:47,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,089 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:47,092 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,094 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) [2022-07-13 03:10:47,100 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 [2022-07-13 03:10:47,100 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 [2022-07-13 03:10:47,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:47,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:47,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:47,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:47,109 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:47,109 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:47,112 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:47,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-07-13 03:10:47,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,132 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) [2022-07-13 03:10:47,133 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 [2022-07-13 03:10:47,134 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 [2022-07-13 03:10:47,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:47,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:47,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:47,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:47,142 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:47,142 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:47,159 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:47,176 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 [2022-07-13 03:10:47,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,178 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) [2022-07-13 03:10:47,180 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 [2022-07-13 03:10:47,181 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 [2022-07-13 03:10:47,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:47,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:47,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:47,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:47,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:47,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:47,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:47,230 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:47,234 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:10:47,234 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:10:47,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,242 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) [2022-07-13 03:10:47,243 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 [2022-07-13 03:10:47,244 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:47,244 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:47,244 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:47,244 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-07-13 03:10:47,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-07-13 03:10:47,263 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:47,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:47,284 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:47,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:47,335 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 03:10:47,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:47,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-07-13 03:10:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:47,416 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 [2022-07-13 03:10:47,417 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:47,458 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 50 transitions. Complement of second has 10 states. [2022-07-13 03:10:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2022-07-13 03:10:47,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-13 03:10:47,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:47,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-13 03:10:47,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:47,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-13 03:10:47,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:47,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2022-07-13 03:10:47,467 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-07-13 03:10:47,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 17 transitions. [2022-07-13 03:10:47,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-13 03:10:47,470 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-07-13 03:10:47,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-07-13 03:10:47,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:47,470 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-13 03:10:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-07-13 03:10:47,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-07-13 03:10:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2022-07-13 03:10:47,485 INFO L392 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2022-07-13 03:10:47,485 INFO L374 stractBuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2022-07-13 03:10:47,485 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:10:47,485 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2022-07-13 03:10:47,486 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-07-13 03:10:47,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:47,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:47,486 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-13 03:10:47,486 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-13 03:10:47,486 INFO L752 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 96#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 101#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 91#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 92#L17-2 [2022-07-13 03:10:47,486 INFO L754 eck$LassoCheckResult]: Loop: 92#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 92#L17-2 [2022-07-13 03:10:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-07-13 03:10:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:47,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266412806] [2022-07-13 03:10:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:47,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:47,491 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:47,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:47,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-07-13 03:10:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:47,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501451321] [2022-07-13 03:10:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:47,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:47,497 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:47,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:47,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:47,499 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2022-07-13 03:10:47,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:47,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292170669] [2022-07-13 03:10:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:47,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:47,504 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:47,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:47,520 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:47,520 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:47,520 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:47,520 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:47,521 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:47,521 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:47,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:47,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2022-07-13 03:10:47,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:47,521 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:47,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,552 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:47,552 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:47,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,568 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) [2022-07-13 03:10:47,568 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 [2022-07-13 03:10:47,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:47,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:47,583 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:47,583 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:47,598 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 [2022-07-13 03:10:47,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,599 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) [2022-07-13 03:10:47,600 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 [2022-07-13 03:10:47,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:47,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:47,622 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:47,623 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:47,643 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 [2022-07-13 03:10:47,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,649 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) [2022-07-13 03:10:47,650 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 [2022-07-13 03:10:47,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:47,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:47,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-07-13 03:10:47,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,673 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) [2022-07-13 03:10:47,674 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 [2022-07-13 03:10:47,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:47,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:47,756 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:47,761 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 [2022-07-13 03:10:47,761 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:47,761 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:47,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:47,761 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:47,761 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:47,761 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,761 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:47,761 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:47,761 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2022-07-13 03:10:47,761 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:47,761 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:47,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:47,803 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:47,804 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:47,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,808 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) [2022-07-13 03:10:47,809 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 [2022-07-13 03:10:47,811 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 [2022-07-13 03:10:47,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:47,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:47,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:47,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:47,819 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:47,819 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:47,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:47,860 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 [2022-07-13 03:10:47,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,861 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) [2022-07-13 03:10:47,862 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 [2022-07-13 03:10:47,863 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 [2022-07-13 03:10:47,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:47,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:47,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:47,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:47,870 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:47,870 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:47,886 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:47,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:47,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,904 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) [2022-07-13 03:10:47,905 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 [2022-07-13 03:10:47,906 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 [2022-07-13 03:10:47,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:47,911 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:47,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:47,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:47,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:47,912 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:47,913 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:47,925 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:47,928 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-13 03:10:47,928 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-07-13 03:10:47,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:47,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:47,929 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) [2022-07-13 03:10:47,959 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:47,959 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:47,959 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:47,959 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2022-07-13 03:10:47,971 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 [2022-07-13 03:10:47,977 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 [2022-07-13 03:10:47,978 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:47,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:47,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:47,996 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 03:10:47,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:47,996 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-13 03:10:47,997 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:48,009 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 23 transitions. Complement of second has 5 states. [2022-07-13 03:10:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-13 03:10:48,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 1 letters. [2022-07-13 03:10:48,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:48,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2022-07-13 03:10:48,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:48,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-13 03:10:48,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:48,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2022-07-13 03:10:48,012 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:10:48,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2022-07-13 03:10:48,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-07-13 03:10:48,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-07-13 03:10:48,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-07-13 03:10:48,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:48,012 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-07-13 03:10:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-07-13 03:10:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-07-13 03:10:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2022-07-13 03:10:48,013 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 18 transitions. [2022-07-13 03:10:48,013 INFO L374 stractBuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2022-07-13 03:10:48,013 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:10:48,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2022-07-13 03:10:48,014 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:10:48,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:48,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:48,014 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-13 03:10:48,015 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:48,015 INFO L752 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 157#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 162#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 160#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 164#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 154#L17-3 [2022-07-13 03:10:48,015 INFO L754 eck$LassoCheckResult]: Loop: 154#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 158#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 153#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 154#L17-3 [2022-07-13 03:10:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 1 times [2022-07-13 03:10:48,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:48,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585765431] [2022-07-13 03:10:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:48,019 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:48,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:48,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:48,023 INFO L85 PathProgramCache]: Analyzing trace with hash 53214, now seen corresponding path program 2 times [2022-07-13 03:10:48,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:48,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150412391] [2022-07-13 03:10:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:48,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:48,026 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:48,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash 301503641, now seen corresponding path program 1 times [2022-07-13 03:10:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:48,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272998854] [2022-07-13 03:10:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:48,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:48,057 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 [2022-07-13 03:10:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 03:10:48,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:10:48,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272998854] [2022-07-13 03:10:48,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272998854] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 03:10:48,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798533865] [2022-07-13 03:10:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:48,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 03:10:48,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:48,117 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 03:10:48,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 03:10:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:48,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 03:10:48,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 03:10:48,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 03:10:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 03:10:48,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798533865] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 03:10:48,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 03:10:48,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-07-13 03:10:48,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170905554] [2022-07-13 03:10:48,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 03:10:48,293 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:48,293 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:48,293 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:48,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:48,294 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:48,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:48,294 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:48,294 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:48,294 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2022-07-13 03:10:48,294 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:48,294 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:48,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:48,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:48,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:48,351 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:48,351 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:48,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:48,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:48,352 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:48,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-13 03:10:48,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:48,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:48,376 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:48,376 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:48,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:48,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:48,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:48,407 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:48,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:48,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:48,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-13 03:10:48,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:48,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:48,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:48,446 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:48,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-13 03:10:48,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:48,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:50,542 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:50,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:50,549 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:50,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:50,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:50,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:50,549 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:50,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:50,549 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:50,549 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:50,549 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2022-07-13 03:10:50,549 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:50,549 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:50,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:50,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:50,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:50,635 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:50,636 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:50,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:50,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:50,640 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:50,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-13 03:10:50,642 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 [2022-07-13 03:10:50,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:50,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:50,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:50,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:50,649 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:50,649 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:50,661 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:50,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:50,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:50,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:50,680 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:50,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-13 03:10:50,682 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 [2022-07-13 03:10:50,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:50,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:50,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:50,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:50,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:50,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:50,689 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:50,704 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:50,709 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:10:50,710 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:10:50,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:50,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:50,711 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:50,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-13 03:10:50,715 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:50,715 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:50,715 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:50,715 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2022-07-13 03:10:50,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-07-13 03:10:50,731 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:50,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:50,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:50,759 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 03:10:50,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:50,778 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 [2022-07-13 03:10:50,778 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:50,800 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 53 transitions. Complement of second has 10 states. [2022-07-13 03:10:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2022-07-13 03:10:50,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-13 03:10:50,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:50,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2022-07-13 03:10:50,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:50,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2022-07-13 03:10:50,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:50,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 53 transitions. [2022-07-13 03:10:50,802 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-07-13 03:10:50,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 25 states and 36 transitions. [2022-07-13 03:10:50,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-07-13 03:10:50,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-07-13 03:10:50,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 36 transitions. [2022-07-13 03:10:50,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:50,803 INFO L369 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2022-07-13 03:10:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 36 transitions. [2022-07-13 03:10:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-13 03:10:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2022-07-13 03:10:50,805 INFO L392 hiAutomatonCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-07-13 03:10:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:10:50,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 03:10:50,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-13 03:10:50,808 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:50,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:10:50,912 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2022-07-13 03:10:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 03:10:50,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-07-13 03:10:50,914 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2022-07-13 03:10:50,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 27 transitions. [2022-07-13 03:10:50,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-07-13 03:10:50,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-07-13 03:10:50,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2022-07-13 03:10:50,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:50,914 INFO L369 hiAutomatonCegarLoop]: Abstraction has 20 states and 27 transitions. [2022-07-13 03:10:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2022-07-13 03:10:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-07-13 03:10:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-07-13 03:10:50,916 INFO L392 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-13 03:10:50,916 INFO L374 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-13 03:10:50,916 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 03:10:50,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2022-07-13 03:10:50,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-13 03:10:50,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:50,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:50,917 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-13 03:10:50,917 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-13 03:10:50,917 INFO L752 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 367#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 369#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 371#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 370#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 365#L17-3 [2022-07-13 03:10:50,917 INFO L754 eck$LassoCheckResult]: Loop: 365#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 368#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 362#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 363#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 365#L17-3 [2022-07-13 03:10:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 2 times [2022-07-13 03:10:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:50,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923828298] [2022-07-13 03:10:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:50,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:50,921 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:50,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1649714, now seen corresponding path program 1 times [2022-07-13 03:10:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869485254] [2022-07-13 03:10:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:50,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:50,927 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:50,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:50,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash 756678359, now seen corresponding path program 2 times [2022-07-13 03:10:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:50,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259623378] [2022-07-13 03:10:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:50,937 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:50,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:50,979 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:50,979 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:50,979 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:50,979 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:50,979 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:50,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:50,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:50,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:50,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2022-07-13 03:10:50,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:50,979 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:50,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:50,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:50,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:51,031 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:51,031 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:51,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:51,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:51,034 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:51,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-13 03:10:51,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:51,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:51,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-07-13 03:10:51,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:51,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:51,065 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:51,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-13 03:10:51,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:51,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:54,636 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:54,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:54,641 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:54,641 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:54,641 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:54,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:54,641 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:54,641 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:54,641 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:54,641 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:54,642 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2022-07-13 03:10:54,642 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:54,642 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:54,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:54,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:54,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:54,695 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:54,695 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:54,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:54,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:54,702 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:54,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-13 03:10:54,736 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 [2022-07-13 03:10:54,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:54,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:54,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:54,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:54,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:54,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:54,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:54,754 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:54,757 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:10:54,757 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:10:54,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:54,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:54,758 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:54,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-13 03:10:54,760 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:54,760 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:54,760 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:54,760 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2022-07-13 03:10:54,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:54,776 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:54,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:54,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:54,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:54,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 03:10:54,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 03:10:54,816 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 [2022-07-13 03:10:54,816 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:54,838 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 33 transitions. Complement of second has 6 states. [2022-07-13 03:10:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:54,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-13 03:10:54,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-13 03:10:54,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:54,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-13 03:10:54,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:54,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2022-07-13 03:10:54,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:54,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 33 transitions. [2022-07-13 03:10:54,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:10:54,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 28 transitions. [2022-07-13 03:10:54,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-07-13 03:10:54,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-13 03:10:54,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2022-07-13 03:10:54,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:54,841 INFO L369 hiAutomatonCegarLoop]: Abstraction has 20 states and 28 transitions. [2022-07-13 03:10:54,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2022-07-13 03:10:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-07-13 03:10:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2022-07-13 03:10:54,842 INFO L392 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-07-13 03:10:54,842 INFO L374 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-07-13 03:10:54,843 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-13 03:10:54,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2022-07-13 03:10:54,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:10:54,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:54,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:54,843 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-07-13 03:10:54,843 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-13 03:10:54,844 INFO L752 eck$LassoCheckResult]: Stem: 454#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 455#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 458#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 465#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 462#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 461#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 456#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 451#L17-2 [2022-07-13 03:10:54,844 INFO L754 eck$LassoCheckResult]: Loop: 451#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 451#L17-2 [2022-07-13 03:10:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 3 times [2022-07-13 03:10:54,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:54,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587162218] [2022-07-13 03:10:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:54,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:54,850 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:54,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:54,855 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2022-07-13 03:10:54,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:54,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976958599] [2022-07-13 03:10:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:54,858 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:54,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash 301503643, now seen corresponding path program 4 times [2022-07-13 03:10:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:54,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608032820] [2022-07-13 03:10:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:54,865 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:54,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:54,880 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:54,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:54,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:54,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:54,881 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:54,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:54,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:54,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:54,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2022-07-13 03:10:54,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:54,881 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:54,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:54,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:54,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:54,915 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:54,915 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:54,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:54,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:54,918 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:54,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-13 03:10:54,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:54,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:54,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-07-13 03:10:54,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:54,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:54,954 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:54,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-13 03:10:54,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:54,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:55,049 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:55,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:55,053 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:55,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:55,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:55,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:55,053 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:55,053 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:55,053 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:55,053 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:55,053 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2022-07-13 03:10:55,053 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:55,053 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:55,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:55,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:55,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:55,093 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:55,093 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:55,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:55,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:55,094 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:55,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-13 03:10:55,108 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 [2022-07-13 03:10:55,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:55,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:55,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:55,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:55,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:55,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:55,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:55,116 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:55,121 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-07-13 03:10:55,121 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-07-13 03:10:55,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:55,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:55,122 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:55,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-13 03:10:55,124 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:55,124 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:55,124 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:55,124 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2022-07-13 03:10:55,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-07-13 03:10:55,139 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:55,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:55,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:55,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:55,162 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 03:10:55,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:55,163 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-13 03:10:55,163 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:55,169 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 29 transitions. Complement of second has 5 states. [2022-07-13 03:10:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-13 03:10:55,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2022-07-13 03:10:55,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:55,170 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:10:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:55,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:55,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:55,189 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 03:10:55,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:55,190 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-13 03:10:55,190 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:55,194 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 29 transitions. Complement of second has 5 states. [2022-07-13 03:10:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-13 03:10:55,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2022-07-13 03:10:55,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:55,195 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:10:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:55,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:55,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:55,214 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 03:10:55,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:55,214 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 1 loop predicates [2022-07-13 03:10:55,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:55,220 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 31 transitions. Complement of second has 4 states. [2022-07-13 03:10:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-07-13 03:10:55,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2022-07-13 03:10:55,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:55,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2022-07-13 03:10:55,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:55,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-13 03:10:55,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:55,221 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2022-07-13 03:10:55,222 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:10:55,222 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2022-07-13 03:10:55,222 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:10:55,222 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:10:55,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:10:55,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:10:55,222 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:10:55,222 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:10:55,222 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:10:55,222 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-13 03:10:55,222 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 03:10:55,222 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:10:55,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 03:10:55,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:10:55 BoogieIcfgContainer [2022-07-13 03:10:55,226 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:10:55,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:10:55,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:10:55,227 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:10:55,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:43" (3/4) ... [2022-07-13 03:10:55,228 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 03:10:55,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:10:55,229 INFO L158 Benchmark]: Toolchain (without parser) took 12399.11ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 62.8MB in the beginning and 42.6MB in the end (delta: 20.2MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2022-07-13 03:10:55,229 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:10:55,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 115.96ms. Allocated memory is still 98.6MB. Free memory was 62.6MB in the beginning and 53.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:10:55,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.55ms. Allocated memory is still 98.6MB. Free memory was 53.9MB in the beginning and 52.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:10:55,229 INFO L158 Benchmark]: Boogie Preprocessor took 9.26ms. Allocated memory is still 98.6MB. Free memory was 52.6MB in the beginning and 51.7MB in the end (delta: 894.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:10:55,230 INFO L158 Benchmark]: RCFGBuilder took 186.32ms. Allocated memory is still 98.6MB. Free memory was 51.6MB in the beginning and 76.0MB in the end (delta: -24.4MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2022-07-13 03:10:55,230 INFO L158 Benchmark]: BuchiAutomizer took 12060.99ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 75.5MB in the beginning and 42.6MB in the end (delta: 32.9MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2022-07-13 03:10:55,230 INFO L158 Benchmark]: Witness Printer took 1.87ms. Allocated memory is still 119.5MB. Free memory is still 42.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:10:55,231 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 98.6MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 115.96ms. Allocated memory is still 98.6MB. Free memory was 62.6MB in the beginning and 53.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.55ms. Allocated memory is still 98.6MB. Free memory was 53.9MB in the beginning and 52.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 9.26ms. Allocated memory is still 98.6MB. Free memory was 52.6MB in the beginning and 51.7MB in the end (delta: 894.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 186.32ms. Allocated memory is still 98.6MB. Free memory was 51.6MB in the beginning and 76.0MB in the end (delta: -24.4MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 12060.99ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 75.5MB in the beginning and 42.6MB in the end (delta: 32.9MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. * Witness Printer took 1.87ms. Allocated memory is still 119.5MB. Free memory is still 42.6MB. 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 6 terminating modules (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One deterministic module has affine ranking function xtmp and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.0s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 11.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 111 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 41 mSDtfsCounter, 111 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf91 smp100 dnf100 smp100 tf107 neg98 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 9.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-13 03:10:55,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:55,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:55,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-13 03:10:55,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE