./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.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 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:58:26,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:58:26,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:58:26,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:58:26,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:58:26,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:58:26,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:58:26,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:58:26,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:58:26,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:58:26,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:58:26,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:58:26,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:58:26,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:58:26,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:58:26,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:58:26,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:58:26,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:58:26,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:58:26,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:58:26,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:58:26,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:58:26,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:58:26,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:58:26,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:58:26,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:58:26,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:58:26,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:58:26,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:58:26,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:58:26,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:58:26,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:58:26,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:58:26,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:58:26,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:58:26,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:58:26,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:58:26,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:58:26,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:58:26,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:58:26,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:58:27,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 22:58:27,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:58:27,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:58:27,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:58:27,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:58:27,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:58:27,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:58:27,045 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:58:27,045 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 22:58:27,045 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 22:58:27,045 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 22:58:27,046 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 22:58:27,046 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 22:58:27,046 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 22:58:27,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:58:27,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:58:27,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:58:27,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:58:27,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 22:58:27,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 22:58:27,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 22:58:27,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 22:58:27,047 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 22:58:27,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:58:27,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 22:58:27,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:58:27,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:58:27,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:58:27,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:58:27,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:58:27,049 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 22:58:27,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 [2021-12-14 22:58:27,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:58:27,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:58:27,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:58:27,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:58:27,247 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:58:27,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-12-14 22:58:27,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b127c404a/eb02695b0f74432e8b989d7ddbc3d861/FLAG69435a50e [2021-12-14 22:58:27,653 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:58:27,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-12-14 22:58:27,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b127c404a/eb02695b0f74432e8b989d7ddbc3d861/FLAG69435a50e [2021-12-14 22:58:28,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b127c404a/eb02695b0f74432e8b989d7ddbc3d861 [2021-12-14 22:58:28,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:58:28,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:58:28,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:58:28,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:58:28,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:58:28,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125bb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28, skipping insertion in model container [2021-12-14 22:58:28,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:58:28,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:58:28,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:58:28,258 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:58:28,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:58:28,273 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:58:28,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28 WrapperNode [2021-12-14 22:58:28,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:58:28,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:58:28,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:58:28,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:58:28,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,308 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-12-14 22:58:28,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:58:28,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:58:28,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:58:28,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:58:28,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:58:28,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:58:28,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:58:28,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:58:28,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (1/1) ... [2021-12-14 22:58:28,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:28,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:28,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:28,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 22:58:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:58:28,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:58:28,427 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:58:28,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:58:28,483 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:58:28,487 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:58:28,488 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 22:58:28,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:28 BoogieIcfgContainer [2021-12-14 22:58:28,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:58:28,490 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 22:58:28,490 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 22:58:28,492 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 22:58:28,493 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:28,493 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 10:58:28" (1/3) ... [2021-12-14 22:58:28,494 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1de966ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:58:28, skipping insertion in model container [2021-12-14 22:58:28,494 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:28,494 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:28" (2/3) ... [2021-12-14 22:58:28,494 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1de966ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:58:28, skipping insertion in model container [2021-12-14 22:58:28,494 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:28,495 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:28" (3/3) ... [2021-12-14 22:58:28,496 INFO L388 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2021-12-14 22:58:28,524 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 22:58:28,525 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 22:58:28,525 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 22:58:28,525 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 22:58:28,525 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 22:58:28,525 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 22:58:28,525 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 22:58:28,525 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 22:58:28,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:28,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 22:58:28,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:28,548 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:28,551 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 22:58:28,551 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:58:28,552 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 22:58:28,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:28,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 22:58:28,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:28,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:28,553 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 22:58:28,553 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:58:28,559 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 6#L18-2true [2021-12-14 22:58:28,559 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 12#L19true assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 3#L19-2true main_~y~0#1 := main_~y~0#1 - 1; 6#L18-2true [2021-12-14 22:58:28,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:28,564 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 22:58:28,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:28,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134319404] [2021-12-14 22:58:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:28,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:28,633 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:28,659 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 41292, now seen corresponding path program 1 times [2021-12-14 22:58:28,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:28,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570758710] [2021-12-14 22:58:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:28,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:28,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:28,687 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:28,690 INFO L85 PathProgramCache]: Analyzing trace with hash 28700234, now seen corresponding path program 1 times [2021-12-14 22:58:28,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:28,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304540626] [2021-12-14 22:58:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:28,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:28,703 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:28,711 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:28,802 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:28,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:28,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:28,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:28,803 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:28,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:28,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:28,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:28,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2021-12-14 22:58:28,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:28,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:28,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:28,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:28,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:28,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:28,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:28,911 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:28,911 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:28,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:28,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:28,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-14 22:58:28,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:28,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:28,948 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:28,949 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:28,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-14 22:58:28,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:28,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:28,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:28,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-14 22:58:28,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:28,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:29,007 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:29,007 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:29,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-14 22:58:29,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:29,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:29,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:29,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:29,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-14 22:58:29,133 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:29,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,140 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:29,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:29,141 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:29,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:29,141 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:29,141 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,141 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:29,141 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:29,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2021-12-14 22:58:29,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:29,141 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:29,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,228 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:29,231 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:29,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,246 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-14 22:58:29,249 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:29,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:29,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:29,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:29,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:29,260 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:29,261 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:29,278 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:29,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-14 22:58:29,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:29,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:29,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:29,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:29,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:29,310 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:29,310 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:29,326 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:29,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-14 22:58:29,347 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:29,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:29,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:29,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:29,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:29,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:29,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:29,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:29,370 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:29,373 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:29,373 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:58:29,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-14 22:58:29,377 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:29,377 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:29,377 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:29,378 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2021-12-14 22:58:29,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,395 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:29,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:29,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:29,468 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:29,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:29,548 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 22:58:29,560 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-12-14 22:58:29,627 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 38 states and 55 transitions. Complement of second has 8 states. [2021-12-14 22:58:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-14 22:58:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-12-14 22:58:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-12-14 22:58:29,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-14 22:58:29,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:29,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-14 22:58:29,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:29,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-14 22:58:29,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:29,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 55 transitions. [2021-12-14 22:58:29,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 22:58:29,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 15 states and 21 transitions. [2021-12-14 22:58:29,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-14 22:58:29,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-14 22:58:29,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2021-12-14 22:58:29,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:29,648 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2021-12-14 22:58:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2021-12-14 22:58:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-14 22:58:29,663 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) [2021-12-14 22:58:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2021-12-14 22:58:29,664 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2021-12-14 22:58:29,664 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2021-12-14 22:58:29,664 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 22:58:29,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2021-12-14 22:58:29,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 22:58:29,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:29,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:29,665 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-14 22:58:29,665 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 22:58:29,665 INFO L791 eck$LassoCheckResult]: Stem: 96#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 97#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 98#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 100#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 101#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 102#L20-2 [2021-12-14 22:58:29,665 INFO L793 eck$LassoCheckResult]: Loop: 102#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 102#L20-2 [2021-12-14 22:58:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2021-12-14 22:58:29,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120947003] [2021-12-14 22:58:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:29,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:29,671 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:29,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:29,675 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2021-12-14 22:58:29,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:29,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238961350] [2021-12-14 22:58:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:29,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:29,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:29,680 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash 889692614, now seen corresponding path program 2 times [2021-12-14 22:58:29,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:29,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746431431] [2021-12-14 22:58:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:29,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:29,685 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:29,689 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:29,702 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:29,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:29,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:29,702 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:29,702 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:29,702 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,702 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:29,702 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:29,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2021-12-14 22:58:29,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:29,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:29,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,758 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:29,758 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:29,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-14 22:58:29,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:29,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:29,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:29,800 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: [] [2021-12-14 22:58:29,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,825 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:29,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:29,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-14 22:58:29,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:29,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:29,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-14 22:58:29,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:29,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:29,979 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:29,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:29,985 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:29,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:29,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:29,985 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:29,985 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:29,985 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:29,985 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:29,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:29,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2021-12-14 22:58:29,985 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:29,986 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:29,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:29,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,025 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:30,026 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:30,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,027 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:30,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-14 22:58:30,029 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:30,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:30,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:30,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:30,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:30,038 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:30,038 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:30,071 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:30,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:30,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,088 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:30,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-14 22:58:30,091 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:30,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:30,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:30,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:30,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:30,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:30,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:30,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:30,113 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:30,115 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:30,115 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:58:30,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,116 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:30,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-14 22:58:30,119 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:30,119 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:30,119 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:30,119 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~m~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2*ULTIMATE.start_main_~m~0#1 + 1 Supporting invariants [] [2021-12-14 22:58:30,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:30,135 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:30,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:30,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:30,159 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:30,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:30,160 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-14 22:58:30,160 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 8 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:30,168 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 8. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 26 states and 40 transitions. Complement of second has 6 states. [2021-12-14 22:58:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 22:58:30,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-12-14 22:58:30,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 5 letters. Loop has 1 letters. [2021-12-14 22:58:30,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:30,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-14 22:58:30,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:30,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-14 22:58:30,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:30,170 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 40 transitions. [2021-12-14 22:58:30,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 22:58:30,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 19 states and 27 transitions. [2021-12-14 22:58:30,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-14 22:58:30,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-14 22:58:30,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 27 transitions. [2021-12-14 22:58:30,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:30,172 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2021-12-14 22:58:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 27 transitions. [2021-12-14 22:58:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-12-14 22:58:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2021-12-14 22:58:30,174 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2021-12-14 22:58:30,174 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2021-12-14 22:58:30,174 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 22:58:30,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 25 transitions. [2021-12-14 22:58:30,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 22:58:30,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:30,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:30,176 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-14 22:58:30,176 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-14 22:58:30,176 INFO L791 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 177#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 186#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 180#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 188#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 187#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 182#L20-3 [2021-12-14 22:58:30,176 INFO L793 eck$LassoCheckResult]: Loop: 182#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 172#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 173#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 178#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 181#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 182#L20-3 [2021-12-14 22:58:30,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:30,177 INFO L85 PathProgramCache]: Analyzing trace with hash 889692612, now seen corresponding path program 1 times [2021-12-14 22:58:30,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:30,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250385827] [2021-12-14 22:58:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:30,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:30,181 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:30,185 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:30,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 54498765, now seen corresponding path program 1 times [2021-12-14 22:58:30,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:30,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705329565] [2021-12-14 22:58:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:30,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:30,189 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:30,193 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:30,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:30,193 INFO L85 PathProgramCache]: Analyzing trace with hash -476736022, now seen corresponding path program 1 times [2021-12-14 22:58:30,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:30,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027384472] [2021-12-14 22:58:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:30,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:30,199 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:30,205 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:30,236 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:30,236 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:30,236 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:30,236 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:30,236 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:30,237 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:30,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:30,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2021-12-14 22:58:30,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:30,237 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:30,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,301 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:30,301 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:30,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,302 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:30,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:30,310 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:30,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-14 22:58:30,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:30,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,336 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:30,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-14 22:58:30,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:30,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:30,435 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:30,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:30,439 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:30,439 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:30,439 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:30,439 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:30,439 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:30,439 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:30,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:30,440 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2021-12-14 22:58:30,440 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:30,440 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:30,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,510 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:30,510 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:30,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,511 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:30,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-14 22:58:30,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:30,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:30,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:30,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:30,521 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 22:58:30,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:30,522 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 22:58:30,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:30,537 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:30,540 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:30,541 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:30,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,572 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) [2021-12-14 22:58:30,574 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 [2021-12-14 22:58:30,577 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:30,577 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:30,577 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:30,577 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 [] [2021-12-14 22:58:30,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-14 22:58:30,593 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:30,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:30,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:30,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:30,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:30,679 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 [2021-12-14 22:58:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:30,693 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:30,693 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 25 transitions. cyclomatic complexity: 11 Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:30,696 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 [2021-12-14 22:58:30,727 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 25 transitions. cyclomatic complexity: 11. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 47 states and 69 transitions. Complement of second has 8 states. [2021-12-14 22:58:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-14 22:58:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2021-12-14 22:58:30,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 6 letters. Loop has 5 letters. [2021-12-14 22:58:30,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:30,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 11 letters. Loop has 5 letters. [2021-12-14 22:58:30,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:30,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 6 letters. Loop has 10 letters. [2021-12-14 22:58:30,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:30,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2021-12-14 22:58:30,730 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 22:58:30,731 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 33 states and 47 transitions. [2021-12-14 22:58:30,731 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-14 22:58:30,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-12-14 22:58:30,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 47 transitions. [2021-12-14 22:58:30,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:30,731 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 47 transitions. [2021-12-14 22:58:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 47 transitions. [2021-12-14 22:58:30,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-12-14 22:58:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2021-12-14 22:58:30,733 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-12-14 22:58:30,733 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-12-14 22:58:30,733 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 22:58:30,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 45 transitions. [2021-12-14 22:58:30,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 22:58:30,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:30,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:30,734 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-12-14 22:58:30,734 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-14 22:58:30,734 INFO L791 eck$LassoCheckResult]: Stem: 299#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 300#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 301#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 302#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 309#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 310#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 323#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 321#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 318#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 317#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 315#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 313#L20-3 [2021-12-14 22:58:30,734 INFO L793 eck$LassoCheckResult]: Loop: 313#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 295#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 296#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 314#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 308#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 313#L20-3 [2021-12-14 22:58:30,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2076867052, now seen corresponding path program 2 times [2021-12-14 22:58:30,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:30,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470196242] [2021-12-14 22:58:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:30,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 22:58:30,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:58:30,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470196242] [2021-12-14 22:58:30,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470196242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:58:30,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:58:30,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 22:58:30,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105473738] [2021-12-14 22:58:30,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:58:30,764 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 22:58:30,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 54498765, now seen corresponding path program 2 times [2021-12-14 22:58:30,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:30,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692658362] [2021-12-14 22:58:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:30,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:30,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:30,770 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:30,798 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:30,798 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:30,798 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:30,798 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:30,798 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:30,798 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,798 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:30,798 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:30,798 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2021-12-14 22:58:30,798 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:30,798 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:30,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:30,859 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:30,860 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:30,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,861 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) [2021-12-14 22:58:30,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:30,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:30,875 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 [2021-12-14 22:58:30,908 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 [2021-12-14 22:58:30,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:30,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:30,909 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) [2021-12-14 22:58:30,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:30,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:30,935 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 [2021-12-14 22:58:31,008 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:31,012 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 [2021-12-14 22:58:31,012 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:31,012 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:31,012 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:31,012 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:31,012 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:31,012 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,012 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:31,012 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:31,012 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2021-12-14 22:58:31,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:31,012 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:31,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,076 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:31,077 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:31,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,078 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) [2021-12-14 22:58:31,079 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 [2021-12-14 22:58:31,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:31,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:31,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:31,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:31,086 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 22:58:31,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:31,087 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 22:58:31,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:31,097 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:31,100 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:31,100 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:31,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,112 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) [2021-12-14 22:58:31,113 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 [2021-12-14 22:58:31,132 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:31,132 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:31,132 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:31,133 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 [] [2021-12-14 22:58:31,150 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 [2021-12-14 22:58:31,150 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:31,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:31,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:31,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:31,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:31,209 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:31,209 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 45 transitions. cyclomatic complexity: 20 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,222 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 45 transitions. cyclomatic complexity: 20. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 44 states and 62 transitions. Complement of second has 7 states. [2021-12-14 22:58:31,222 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 [2021-12-14 22:58:31,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-14 22:58:31,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 5 letters. [2021-12-14 22:58:31,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:31,223 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:31,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:31,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:31,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:31,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:31,272 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:31,273 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 45 transitions. cyclomatic complexity: 20 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,290 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 45 transitions. cyclomatic complexity: 20. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 69 states and 98 transitions. Complement of second has 10 states. [2021-12-14 22:58:31,291 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 [2021-12-14 22:58:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2021-12-14 22:58:31,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 11 letters. Loop has 5 letters. [2021-12-14 22:58:31,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:31,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 16 letters. Loop has 5 letters. [2021-12-14 22:58:31,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:31,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 11 letters. Loop has 10 letters. [2021-12-14 22:58:31,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:31,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 98 transitions. [2021-12-14 22:58:31,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-12-14 22:58:31,294 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 62 states and 86 transitions. [2021-12-14 22:58:31,294 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-14 22:58:31,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-12-14 22:58:31,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 86 transitions. [2021-12-14 22:58:31,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:31,312 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 86 transitions. [2021-12-14 22:58:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 86 transitions. [2021-12-14 22:58:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2021-12-14 22:58:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 50 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 75 transitions. [2021-12-14 22:58:31,315 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 75 transitions. [2021-12-14 22:58:31,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:58:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:58:31,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:58:31,318 INFO L87 Difference]: Start difference. First operand 51 states and 75 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:58:31,330 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-12-14 22:58:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:58:31,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 58 transitions. [2021-12-14 22:58:31,331 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-12-14 22:58:31,331 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 35 states and 49 transitions. [2021-12-14 22:58:31,331 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-12-14 22:58:31,331 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-14 22:58:31,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 49 transitions. [2021-12-14 22:58:31,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:31,332 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-12-14 22:58:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 49 transitions. [2021-12-14 22:58:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-14 22:58:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.4) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2021-12-14 22:58:31,333 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-12-14 22:58:31,333 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 49 transitions. [2021-12-14 22:58:31,333 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 22:58:31,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 49 transitions. [2021-12-14 22:58:31,334 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-12-14 22:58:31,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:31,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:31,334 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:31,334 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-14 22:58:31,334 INFO L791 eck$LassoCheckResult]: Stem: 673#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 674#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 686#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 683#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 684#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 700#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 681#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 682#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 699#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 685#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 677#L20-2 [2021-12-14 22:58:31,334 INFO L793 eck$LassoCheckResult]: Loop: 677#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 678#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 687#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 669#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 670#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 675#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 677#L20-2 [2021-12-14 22:58:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1093000075, now seen corresponding path program 3 times [2021-12-14 22:58:31,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:31,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120251951] [2021-12-14 22:58:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:31,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,339 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,343 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1566202598, now seen corresponding path program 1 times [2021-12-14 22:58:31,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:31,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012095941] [2021-12-14 22:58:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:31,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,346 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,348 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash -410261776, now seen corresponding path program 4 times [2021-12-14 22:58:31,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:31,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007203714] [2021-12-14 22:58:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:31,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,361 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:31,395 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:31,395 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:31,395 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:31,395 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:31,395 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:31,395 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,395 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:31,395 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:31,396 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2021-12-14 22:58:31,396 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:31,396 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:31,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,447 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:31,447 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:31,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,448 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) [2021-12-14 22:58:31,462 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 [2021-12-14 22:58:31,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:31,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:31,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-14 22:58:31,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,487 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) [2021-12-14 22:58:31,488 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 [2021-12-14 22:58:31,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:31,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:31,530 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:31,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:31,535 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:31,535 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:31,535 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:31,535 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:31,535 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:31,535 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:31,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:31,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2021-12-14 22:58:31,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:31,536 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:31,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,592 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:31,592 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:31,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,593 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) [2021-12-14 22:58:31,594 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 [2021-12-14 22:58:31,596 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:31,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:31,601 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:31,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:31,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:31,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:31,602 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:31,602 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:31,605 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:31,608 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:31,608 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:31,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,609 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) [2021-12-14 22:58:31,610 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 [2021-12-14 22:58:31,611 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:31,611 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:31,611 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:31,611 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-14 22:58:31,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-14 22:58:31,627 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:31,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:31,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:31,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:31,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 22:58:31,683 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:31,683 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 49 transitions. cyclomatic complexity: 20 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,693 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 49 transitions. cyclomatic complexity: 20. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 100 states and 143 transitions. Complement of second has 6 states. [2021-12-14 22:58:31,693 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 [2021-12-14 22:58:31,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 22:58:31,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 6 letters. [2021-12-14 22:58:31,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:31,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 6 letters. [2021-12-14 22:58:31,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:31,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 12 letters. [2021-12-14 22:58:31,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:31,695 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 143 transitions. [2021-12-14 22:58:31,696 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2021-12-14 22:58:31,696 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 67 states and 96 transitions. [2021-12-14 22:58:31,696 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-14 22:58:31,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-14 22:58:31,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 96 transitions. [2021-12-14 22:58:31,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:31,697 INFO L681 BuchiCegarLoop]: Abstraction has 67 states and 96 transitions. [2021-12-14 22:58:31,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 96 transitions. [2021-12-14 22:58:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 46. [2021-12-14 22:58:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 45 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 68 transitions. [2021-12-14 22:58:31,699 INFO L704 BuchiCegarLoop]: Abstraction has 46 states and 68 transitions. [2021-12-14 22:58:31,699 INFO L587 BuchiCegarLoop]: Abstraction has 46 states and 68 transitions. [2021-12-14 22:58:31,699 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 22:58:31,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 68 transitions. [2021-12-14 22:58:31,700 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-14 22:58:31,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:31,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:31,700 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:31,700 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 22:58:31,700 INFO L791 eck$LassoCheckResult]: Stem: 880#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 881#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 893#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 890#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 884#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 885#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 908#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 905#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 903#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 904#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 894#L20-2 [2021-12-14 22:58:31,700 INFO L793 eck$LassoCheckResult]: Loop: 894#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 894#L20-2 [2021-12-14 22:58:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1093000075, now seen corresponding path program 5 times [2021-12-14 22:58:31,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:31,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984059988] [2021-12-14 22:58:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:31,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,705 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,709 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,709 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 2 times [2021-12-14 22:58:31,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:31,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256853242] [2021-12-14 22:58:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:31,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,711 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,712 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash -476736020, now seen corresponding path program 6 times [2021-12-14 22:58:31,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:31,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038877279] [2021-12-14 22:58:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:31,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,717 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:31,720 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:31,731 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:31,731 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:31,731 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:31,731 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:31,731 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:31,731 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,731 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:31,731 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:31,731 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2021-12-14 22:58:31,731 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:31,731 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:31,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:31,761 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:31,761 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:31,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,762 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) [2021-12-14 22:58:31,763 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 [2021-12-14 22:58:31,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:31,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:31,779 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:31,780 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:31,802 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 [2021-12-14 22:58:31,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,817 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) [2021-12-14 22:58:31,818 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 [2021-12-14 22:58:31,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:31,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:31,839 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:31,839 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:31,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:31,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,857 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) [2021-12-14 22:58:31,858 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 [2021-12-14 22:58:31,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:31,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:31,883 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 [2021-12-14 22:58:31,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:31,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:31,884 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) [2021-12-14 22:58:31,885 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 [2021-12-14 22:58:31,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:31,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:32,000 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:32,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:32,006 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:32,006 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:32,006 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:32,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:32,006 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:32,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:32,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:32,006 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2021-12-14 22:58:32,006 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:32,006 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:32,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,051 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:32,051 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:32,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,053 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) [2021-12-14 22:58:32,067 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 [2021-12-14 22:58:32,067 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:32,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:32,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:32,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:32,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:32,084 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:32,084 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:32,099 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:32,117 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 [2021-12-14 22:58:32,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,118 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-14 22:58:32,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:32,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:32,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:32,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:32,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:32,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:32,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:32,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:32,151 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:32,153 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:32,153 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:58:32,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,154 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-14 22:58:32,167 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:32,168 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:32,168 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:32,168 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~m~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2*ULTIMATE.start_main_~m~0#1 + 1 Supporting invariants [] [2021-12-14 22:58:32,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:32,185 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:32,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:32,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:32,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:32,231 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 [2021-12-14 22:58:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:32,266 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:32,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:32,267 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-14 22:58:32,267 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30 Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:32,274 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 52 states and 75 transitions. Complement of second has 5 states. [2021-12-14 22:58:32,275 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 [2021-12-14 22:58:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-14 22:58:32,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2021-12-14 22:58:32,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:32,277 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:32,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:32,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:32,306 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:32,307 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 [2021-12-14 22:58:32,307 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30 Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:32,316 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 52 states and 75 transitions. Complement of second has 5 states. [2021-12-14 22:58:32,317 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 [2021-12-14 22:58:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-14 22:58:32,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2021-12-14 22:58:32,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:32,318 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:32,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:32,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:32,342 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:32,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:32,354 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 [2021-12-14 22:58:32,355 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30 Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:32,360 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 63 states and 88 transitions. Complement of second has 4 states. [2021-12-14 22:58:32,361 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 [2021-12-14 22:58:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-12-14 22:58:32,361 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 1 letters. [2021-12-14 22:58:32,361 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:32,361 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 11 letters. Loop has 1 letters. [2021-12-14 22:58:32,361 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:32,361 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 2 letters. [2021-12-14 22:58:32,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:32,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 88 transitions. [2021-12-14 22:58:32,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:58:32,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 45 states and 62 transitions. [2021-12-14 22:58:32,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-14 22:58:32,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 22:58:32,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 62 transitions. [2021-12-14 22:58:32,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:32,363 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 62 transitions. [2021-12-14 22:58:32,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 62 transitions. [2021-12-14 22:58:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-12-14 22:58:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:32,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-12-14 22:58:32,364 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-12-14 22:58:32,365 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-12-14 22:58:32,365 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-14 22:58:32,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 54 transitions. [2021-12-14 22:58:32,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:58:32,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:32,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:32,365 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1] [2021-12-14 22:58:32,365 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:58:32,365 INFO L791 eck$LassoCheckResult]: Stem: 1221#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1222#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 1223#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1224#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 1226#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1227#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1230#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 1219#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1220#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1225#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 1232#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1243#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1239#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 1237#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1238#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1233#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1217#L19-2 [2021-12-14 22:58:32,365 INFO L793 eck$LassoCheckResult]: Loop: 1217#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1218#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1234#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1217#L19-2 [2021-12-14 22:58:32,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:32,366 INFO L85 PathProgramCache]: Analyzing trace with hash -410261761, now seen corresponding path program 1 times [2021-12-14 22:58:32,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:32,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006442277] [2021-12-14 22:58:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:32,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:32,398 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:32,412 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash 59952, now seen corresponding path program 2 times [2021-12-14 22:58:32,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:32,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773403625] [2021-12-14 22:58:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:32,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:32,418 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:32,429 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1368832626, now seen corresponding path program 2 times [2021-12-14 22:58:32,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:32,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212653717] [2021-12-14 22:58:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:32,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 22:58:32,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:58:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212653717] [2021-12-14 22:58:32,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212653717] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 22:58:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710248377] [2021-12-14 22:58:32,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 22:58:32,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:58:32,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,480 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-14 22:58:32,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 22:58:32,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 22:58:32,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 22:58:32,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 22:58:32,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:58:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 22:58:32,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710248377] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:58:32,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 22:58:32,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-14 22:58:32,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313671682] [2021-12-14 22:58:32,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 22:58:32,571 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:32,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:32,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:32,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:32,572 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:32,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:32,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:32,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2021-12-14 22:58:32,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:32,572 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:32,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,599 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:32,599 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:32,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,600 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-14 22:58:32,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:32,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:32,628 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:32,629 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:32,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-14 22:58:32,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,645 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-14 22:58:32,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:32,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:32,659 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:32,659 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:32,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-14 22:58:32,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,676 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-14 22:58:32,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:32,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:32,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-14 22:58:32,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,730 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-14 22:58:32,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:32,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:32,782 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:32,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:32,785 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:32,785 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:32,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:32,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:32,785 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:32,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:32,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:32,785 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2021-12-14 22:58:32,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:32,785 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:32,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:32,836 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:32,836 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:32,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,837 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-14 22:58:32,841 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:32,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:32,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:32,848 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:32,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:32,848 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:32,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:32,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:32,863 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:32,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:32,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,879 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-14 22:58:32,881 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:32,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:32,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:32,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:32,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:32,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:32,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:32,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:32,903 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:32,916 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:32,916 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:32,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:32,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:32,931 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:32,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-14 22:58:32,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:32,956 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:32,956 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:32,956 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 [] [2021-12-14 22:58:32,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:32,986 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:32,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:32,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:32,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:33,025 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:33,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:33,039 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:33,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 21 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:33,052 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 21. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Result 119 states and 170 transitions. Complement of second has 7 states. [2021-12-14 22:58:33,052 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 [2021-12-14 22:58:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 22:58:33,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 3 letters. [2021-12-14 22:58:33,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:33,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 19 letters. Loop has 3 letters. [2021-12-14 22:58:33,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:33,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 6 letters. [2021-12-14 22:58:33,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:33,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 170 transitions. [2021-12-14 22:58:33,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:58:33,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 92 states and 127 transitions. [2021-12-14 22:58:33,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-14 22:58:33,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 22:58:33,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 127 transitions. [2021-12-14 22:58:33,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:33,055 INFO L681 BuchiCegarLoop]: Abstraction has 92 states and 127 transitions. [2021-12-14 22:58:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 127 transitions. [2021-12-14 22:58:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 69. [2021-12-14 22:58:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 68 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2021-12-14 22:58:33,058 INFO L704 BuchiCegarLoop]: Abstraction has 69 states and 96 transitions. [2021-12-14 22:58:33,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:58:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 22:58:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:58:33,059 INFO L87 Difference]: Start difference. First operand 69 states and 96 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:58:33,071 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2021-12-14 22:58:33,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:58:33,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 132 transitions. [2021-12-14 22:58:33,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:58:33,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 77 states and 106 transitions. [2021-12-14 22:58:33,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-14 22:58:33,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 22:58:33,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 106 transitions. [2021-12-14 22:58:33,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:33,074 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 106 transitions. [2021-12-14 22:58:33,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 106 transitions. [2021-12-14 22:58:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-12-14 22:58:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.381578947368421) internal successors, (105), 75 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2021-12-14 22:58:33,077 INFO L704 BuchiCegarLoop]: Abstraction has 76 states and 105 transitions. [2021-12-14 22:58:33,077 INFO L587 BuchiCegarLoop]: Abstraction has 76 states and 105 transitions. [2021-12-14 22:58:33,077 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-14 22:58:33,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 105 transitions. [2021-12-14 22:58:33,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:58:33,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:33,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:33,078 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1, 1] [2021-12-14 22:58:33,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:58:33,078 INFO L791 eck$LassoCheckResult]: Stem: 1741#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1742#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 1743#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1744#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 1746#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1747#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1808#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1749#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 1801#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1799#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1796#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1755#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1794#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1793#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 1756#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1766#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1762#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 1760#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1761#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1754#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1737#L19-2 [2021-12-14 22:58:33,078 INFO L793 eck$LassoCheckResult]: Loop: 1737#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1738#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1757#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1737#L19-2 [2021-12-14 22:58:33,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:33,078 INFO L85 PathProgramCache]: Analyzing trace with hash 33262129, now seen corresponding path program 3 times [2021-12-14 22:58:33,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:33,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358350947] [2021-12-14 22:58:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:33,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:33,083 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:33,104 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash 59952, now seen corresponding path program 3 times [2021-12-14 22:58:33,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:33,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711948008] [2021-12-14 22:58:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:33,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:33,106 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:33,107 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1225330176, now seen corresponding path program 4 times [2021-12-14 22:58:33,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:33,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745605501] [2021-12-14 22:58:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:33,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-14 22:58:33,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:58:33,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745605501] [2021-12-14 22:58:33,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745605501] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 22:58:33,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282271462] [2021-12-14 22:58:33,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 22:58:33,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:58:33,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,153 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-14 22:58:33,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 22:58:33,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 22:58:33,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 22:58:33,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:33,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-14 22:58:33,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:58:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-14 22:58:33,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282271462] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:58:33,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 22:58:33,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2021-12-14 22:58:33,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137548013] [2021-12-14 22:58:33,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 22:58:33,274 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:33,274 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:33,274 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:33,274 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:33,274 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:33,275 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,275 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:33,275 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:33,275 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2021-12-14 22:58:33,275 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:33,275 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:33,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,303 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:33,303 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:33,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,304 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-14 22:58:33,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:33,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:33,328 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:33,328 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:33,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:33,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,344 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-14 22:58:33,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:33,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:33,401 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:33,402 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:33,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:33,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,420 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-14 22:58:33,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:33,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:33,456 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:33,457 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:33,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:33,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,473 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-14 22:58:33,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:33,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:33,482 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:33,482 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:33,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:33,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,499 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-14 22:58:33,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:33,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:33,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:33,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,532 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-14 22:58:33,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:33,534 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:33,584 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:33,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:33,589 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:33,589 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:33,589 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:33,589 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:33,589 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:33,589 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,589 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:33,589 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:33,589 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2021-12-14 22:58:33,589 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:33,589 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:33,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:33,633 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:33,633 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:33,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,649 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-14 22:58:33,651 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:33,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:33,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:33,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:33,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:33,659 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:33,659 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:33,674 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:33,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:33,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,702 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-14 22:58:33,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:33,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:33,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:33,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:33,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:33,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:33,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:33,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:33,719 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:33,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-12-14 22:58:33,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,736 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-14 22:58:33,770 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:33,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:33,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:33,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:33,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:33,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:33,776 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:33,776 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:33,790 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:33,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-12-14 22:58:33,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,807 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-14 22:58:33,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:33,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:33,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:33,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:33,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:33,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:33,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:33,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:33,848 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:33,850 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 22:58:33,850 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:58:33,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:33,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:33,851 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:33,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-14 22:58:33,854 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:33,855 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:33,855 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:33,855 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 [] [2021-12-14 22:58:33,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-12-14 22:58:33,870 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:33,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:33,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:33,919 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:33,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:33,937 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:33,937 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 105 transitions. cyclomatic complexity: 41 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:33,950 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 105 transitions. cyclomatic complexity: 41. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 96 states and 132 transitions. Complement of second has 7 states. [2021-12-14 22:58:33,950 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 [2021-12-14 22:58:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 22:58:33,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 3 letters. [2021-12-14 22:58:33,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:33,951 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:33,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:33,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:33,999 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:33,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:34,016 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:34,016 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 105 transitions. cyclomatic complexity: 41 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,036 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 105 transitions. cyclomatic complexity: 41. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 139 states and 185 transitions. Complement of second has 9 states. [2021-12-14 22:58:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 22:58:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-12-14 22:58:34,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 20 letters. Loop has 3 letters. [2021-12-14 22:58:34,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:34,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 23 letters. Loop has 3 letters. [2021-12-14 22:58:34,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:34,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 20 letters. Loop has 6 letters. [2021-12-14 22:58:34,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:34,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 185 transitions. [2021-12-14 22:58:34,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:58:34,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 133 states and 176 transitions. [2021-12-14 22:58:34,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-14 22:58:34,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 22:58:34,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 133 states and 176 transitions. [2021-12-14 22:58:34,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:34,040 INFO L681 BuchiCegarLoop]: Abstraction has 133 states and 176 transitions. [2021-12-14 22:58:34,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states and 176 transitions. [2021-12-14 22:58:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2021-12-14 22:58:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 1.3565217391304347) internal successors, (156), 114 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 156 transitions. [2021-12-14 22:58:34,044 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 156 transitions. [2021-12-14 22:58:34,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:58:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 22:58:34,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-14 22:58:34,045 INFO L87 Difference]: Start difference. First operand 115 states and 156 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-12-14 22:58:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:58:34,061 INFO L93 Difference]: Finished difference Result 287 states and 369 transitions. [2021-12-14 22:58:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 22:58:34,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 287 states and 369 transitions. [2021-12-14 22:58:34,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:58:34,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 287 states to 184 states and 240 transitions. [2021-12-14 22:58:34,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-14 22:58:34,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 22:58:34,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 184 states and 240 transitions. [2021-12-14 22:58:34,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:34,064 INFO L681 BuchiCegarLoop]: Abstraction has 184 states and 240 transitions. [2021-12-14 22:58:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states and 240 transitions. [2021-12-14 22:58:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 150. [2021-12-14 22:58:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 149 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 202 transitions. [2021-12-14 22:58:34,068 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 202 transitions. [2021-12-14 22:58:34,068 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 202 transitions. [2021-12-14 22:58:34,068 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-14 22:58:34,069 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 202 transitions. [2021-12-14 22:58:34,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:58:34,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:34,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:34,070 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1] [2021-12-14 22:58:34,070 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:58:34,070 INFO L791 eck$LassoCheckResult]: Stem: 2766#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2767#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 2768#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2769#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 2771#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2772#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2815#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 2816#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 2814#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 2809#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2810#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 2800#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 2799#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2796#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 2792#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2793#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2808#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2781#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 2785#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 2784#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 2783#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2779#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 2762#L19-2 [2021-12-14 22:58:34,070 INFO L793 eck$LassoCheckResult]: Loop: 2762#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 2763#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2782#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 2762#L19-2 [2021-12-14 22:58:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash -743097903, now seen corresponding path program 5 times [2021-12-14 22:58:34,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:34,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956507134] [2021-12-14 22:58:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:34,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:34,080 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:34,085 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:34,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:34,086 INFO L85 PathProgramCache]: Analyzing trace with hash 59952, now seen corresponding path program 4 times [2021-12-14 22:58:34,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:34,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140665888] [2021-12-14 22:58:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:34,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:34,088 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:34,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:34,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:34,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1368154528, now seen corresponding path program 6 times [2021-12-14 22:58:34,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:34,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937212229] [2021-12-14 22:58:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:34,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:34,109 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:34,113 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:34,133 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:34,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:34,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:34,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:34,134 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:34,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:34,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:34,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration9_Loop [2021-12-14 22:58:34,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:34,134 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:34,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,175 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:34,175 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:34,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,176 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-14 22:58:34,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:34,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:34,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:34,200 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:34,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,216 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-14 22:58:34,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:34,218 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:34,225 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:34,225 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:34,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,242 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-14 22:58:34,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:34,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:34,255 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:34,255 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:34,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,271 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-14 22:58:34,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:34,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:34,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,296 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-12-14 22:58:34,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:34,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:34,348 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:34,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,351 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:34,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:34,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:34,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:34,351 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:34,351 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:34,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:34,352 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration9_Loop [2021-12-14 22:58:34,352 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:34,352 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:34,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:34,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,427 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:34,427 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:34,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,428 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-12-14 22:58:34,430 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:34,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:34,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:34,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:34,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:34,448 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:34,448 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:34,463 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:34,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,491 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-12-14 22:58:34,493 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:34,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:34,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:34,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:34,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:34,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:34,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:34,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:34,514 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:34,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,531 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-12-14 22:58:34,533 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:34,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:34,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:34,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:34,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:34,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:34,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:34,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:34,551 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:34,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,567 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-12-14 22:58:34,569 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:34,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:34,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:34,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:34,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:34,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:34,576 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:34,576 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:34,591 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:34,593 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:34,593 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:34,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:34,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:34,594 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:34,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-12-14 22:58:34,596 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:34,596 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:34,596 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:34,596 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 [] [2021-12-14 22:58:34,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:34,611 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:34,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:34,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:34,666 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:34,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:34,701 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:34,701 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 197 states and 266 transitions. Complement of second has 7 states. [2021-12-14 22:58:34,713 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 [2021-12-14 22:58:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 22:58:34,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 22 letters. Loop has 3 letters. [2021-12-14 22:58:34,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:34,714 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:34,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:34,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:34,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:34,774 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:34,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:34,789 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:58:34,790 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,819 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 241 states and 317 transitions. Complement of second has 9 states. [2021-12-14 22:58:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-14 22:58:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-12-14 22:58:34,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 22 letters. Loop has 3 letters. [2021-12-14 22:58:34,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:34,820 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:34,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:34,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:34,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:34,862 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:34,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:34,877 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 3 loop predicates [2021-12-14 22:58:34,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,900 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 254 states and 349 transitions. Complement of second has 8 states. [2021-12-14 22:58:34,901 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 [2021-12-14 22:58:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:58:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-14 22:58:34,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 22 letters. Loop has 3 letters. [2021-12-14 22:58:34,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:34,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 25 letters. Loop has 3 letters. [2021-12-14 22:58:34,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:34,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 22 letters. Loop has 6 letters. [2021-12-14 22:58:34,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:34,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 254 states and 349 transitions. [2021-12-14 22:58:34,903 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:58:34,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 254 states to 0 states and 0 transitions. [2021-12-14 22:58:34,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 22:58:34,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 22:58:34,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 22:58:34,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 22:58:34,904 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:58:34,904 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:58:34,904 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:58:34,904 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-14 22:58:34,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 22:58:34,904 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:58:34,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 22:58:34,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 10:58:34 BoogieIcfgContainer [2021-12-14 22:58:34,909 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 22:58:34,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 22:58:34,910 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 22:58:34,910 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 22:58:34,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:28" (3/4) ... [2021-12-14 22:58:34,912 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 22:58:34,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 22:58:34,912 INFO L158 Benchmark]: Toolchain (without parser) took 6807.72ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 60.0MB in the beginning and 60.8MB in the end (delta: -809.5kB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2021-12-14 22:58:34,912 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:58:34,913 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.66ms. Allocated memory is still 81.8MB. Free memory was 59.8MB in the beginning and 59.0MB in the end (delta: 815.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 22:58:34,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.46ms. Allocated memory is still 81.8MB. Free memory was 59.0MB in the beginning and 57.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:58:34,913 INFO L158 Benchmark]: Boogie Preprocessor took 10.14ms. Allocated memory is still 81.8MB. Free memory was 57.5MB in the beginning and 56.6MB in the end (delta: 861.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 22:58:34,913 INFO L158 Benchmark]: RCFGBuilder took 169.99ms. Allocated memory is still 81.8MB. Free memory was 56.6MB in the beginning and 48.7MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-14 22:58:34,913 INFO L158 Benchmark]: BuchiAutomizer took 6419.33ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 48.5MB in the beginning and 60.8MB in the end (delta: -12.3MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2021-12-14 22:58:34,913 INFO L158 Benchmark]: Witness Printer took 2.37ms. Allocated memory is still 119.5MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:58:34,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.66ms. Allocated memory is still 81.8MB. Free memory was 59.8MB in the beginning and 59.0MB in the end (delta: 815.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.46ms. Allocated memory is still 81.8MB. Free memory was 59.0MB in the beginning and 57.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.14ms. Allocated memory is still 81.8MB. Free memory was 57.5MB in the beginning and 56.6MB in the end (delta: 861.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 169.99ms. Allocated memory is still 81.8MB. Free memory was 56.6MB in the beginning and 48.7MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 6419.33ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 48.5MB in the beginning and 60.8MB in the end (delta: -12.3MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Witness Printer took 2.37ms. Allocated memory is still 119.5MB. Free memory is still 60.8MB. 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 12 terminating modules (3 trivial, 7 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.3s and 10 iterations. TraceHistogramMax:5. Analysis of lassos took 4.8s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 118 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 150 states and ocurred in iteration 8. Nontrivial modules had stage [5, 2, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 189 mSDsluCounter, 261 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 171 mSDtfsCounter, 179 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax165 hnf98 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf94 smp100 dnf111 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-14 22:58:34,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:35,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:35,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-14 22:58:35,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE