./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 26d01a9c 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/BrockschmidtCookFuhs-CAV2013-Fig9a.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 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 04:13:12,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 04:13:12,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 04:13:12,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 04:13:12,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 04:13:12,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 04:13:12,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 04:13:12,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 04:13:12,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 04:13:12,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 04:13:12,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 04:13:12,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 04:13:12,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 04:13:12,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 04:13:12,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 04:13:12,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 04:13:12,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 04:13:12,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 04:13:12,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 04:13:12,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 04:13:12,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 04:13:12,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 04:13:12,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 04:13:12,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 04:13:12,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 04:13:12,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 04:13:12,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 04:13:12,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 04:13:12,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 04:13:12,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 04:13:12,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 04:13:12,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 04:13:12,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 04:13:12,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 04:13:12,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 04:13:12,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 04:13:12,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 04:13:12,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 04:13:12,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 04:13:12,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 04:13:12,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 04:13:12,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-17 04:13:12,424 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 04:13:12,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 04:13:12,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 04:13:12,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 04:13:12,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 04:13:12,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 04:13:12,427 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 04:13:12,427 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-17 04:13:12,427 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-17 04:13:12,427 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-17 04:13:12,428 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-17 04:13:12,428 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-17 04:13:12,429 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-17 04:13:12,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 04:13:12,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 04:13:12,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 04:13:12,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 04:13:12,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-17 04:13:12,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-17 04:13:12,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-17 04:13:12,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 04:13:12,430 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-17 04:13:12,430 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 04:13:12,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-17 04:13:12,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 04:13:12,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 04:13:12,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 04:13:12,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 04:13:12,433 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-17 04:13:12,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2023-02-17 04:13:12,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 04:13:12,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 04:13:12,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 04:13:12,687 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 04:13:12,688 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 04:13:12,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-17 04:13:13,796 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 04:13:13,946 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 04:13:13,946 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-17 04:13:13,950 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4981844d5/700d430a8b084a53aa3a637ac0997440/FLAGaed5f6ed5 [2023-02-17 04:13:13,958 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4981844d5/700d430a8b084a53aa3a637ac0997440 [2023-02-17 04:13:13,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 04:13:13,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 04:13:13,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 04:13:13,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 04:13:13,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 04:13:13,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:13:13" (1/1) ... [2023-02-17 04:13:13,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7d1c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:13, skipping insertion in model container [2023-02-17 04:13:13,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:13:13" (1/1) ... [2023-02-17 04:13:13,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 04:13:13,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 04:13:14,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:13:14,104 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 04:13:14,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:13:14,130 INFO L208 MainTranslator]: Completed translation [2023-02-17 04:13:14,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14 WrapperNode [2023-02-17 04:13:14,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 04:13:14,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 04:13:14,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 04:13:14,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 04:13:14,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,161 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-02-17 04:13:14,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 04:13:14,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 04:13:14,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 04:13:14,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 04:13:14,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 04:13:14,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 04:13:14,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 04:13:14,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 04:13:14,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (1/1) ... [2023-02-17 04:13:14,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:14,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:14,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:14,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-02-17 04:13:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 04:13:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 04:13:14,308 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 04:13:14,310 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 04:13:14,365 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 04:13:14,370 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 04:13:14,371 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 04:13:14,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:13:14 BoogieIcfgContainer [2023-02-17 04:13:14,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 04:13:14,373 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-17 04:13:14,373 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-17 04:13:14,376 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-17 04:13:14,377 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:13:14,377 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.02 04:13:13" (1/3) ... [2023-02-17 04:13:14,378 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38a6e74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 04:13:14, skipping insertion in model container [2023-02-17 04:13:14,379 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:13:14,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:13:14" (2/3) ... [2023-02-17 04:13:14,379 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38a6e74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 04:13:14, skipping insertion in model container [2023-02-17 04:13:14,379 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:13:14,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:13:14" (3/3) ... [2023-02-17 04:13:14,380 INFO L332 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-17 04:13:14,437 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-17 04:13:14,438 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-17 04:13:14,438 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-17 04:13:14,438 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-17 04:13:14,438 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-17 04:13:14,438 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-17 04:13:14,438 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-17 04:13:14,439 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-17 04:13:14,444 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2023-02-17 04:13:14,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 04:13:14,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:13:14,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:13:14,465 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-17 04:13:14,465 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 04:13:14,465 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-17 04:13:14,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2023-02-17 04:13:14,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 04:13:14,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:13:14,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:13:14,466 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-17 04:13:14,467 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 04:13:14,472 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~k~0#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 10#L20true assume main_~k~0#1 >= 1;main_~i~0#1 := 0; 8#L22-2true [2023-02-17 04:13:14,472 INFO L750 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 3#L24-2true assume !(main_~j~0#1 <= main_~i~0#1); 9#L24-3true main_~i~0#1 := 1 + main_~i~0#1; 8#L22-2true [2023-02-17 04:13:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-17 04:13:14,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:14,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212517642] [2023-02-17 04:13:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:14,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:14,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:14,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash 43923, now seen corresponding path program 1 times [2023-02-17 04:13:14,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:14,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339633909] [2023-02-17 04:13:14,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:14,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:14,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:14,605 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:14,606 INFO L85 PathProgramCache]: Analyzing trace with hash 889513810, now seen corresponding path program 1 times [2023-02-17 04:13:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:14,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129685965] [2023-02-17 04:13:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:14,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:14,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:13:14,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129685965] [2023-02-17 04:13:14,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129685965] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:13:14,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:13:14,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 04:13:14,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610919977] [2023-02-17 04:13:14,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:13:14,710 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:13:14,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:13:14,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:13:14,711 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:13:14,711 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:13:14,711 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:14,711 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:13:14,712 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:13:14,712 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2023-02-17 04:13:14,712 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:13:14,712 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:13:14,724 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:14,730 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:14,731 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:14,740 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:13:14,740 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:13:14,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:14,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:14,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:14,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-17 04:13:14,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:14,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:14,841 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:13:14,841 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:13:14,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:14,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:14,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:14,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:14,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-17 04:13:14,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:14,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:14,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:13:14,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:13:14,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:14,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:14,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:14,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:14,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-17 04:13:14,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:14,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:14,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:14,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:14,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:14,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:14,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-17 04:13:14,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:13:14,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:15,062 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:13:15,068 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 [2023-02-17 04:13:15,068 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:13:15,068 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:13:15,068 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:13:15,068 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:13:15,069 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:13:15,069 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,069 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:13:15,069 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:13:15,069 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2023-02-17 04:13:15,069 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:13:15,070 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:13:15,072 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,073 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,075 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,079 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:13:15,102 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:13:15,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-17 04:13:15,108 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-17 04:13:15,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:13:15,117 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:13:15,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:13:15,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:13:15,130 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:13:15,130 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:13:15,168 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:13:15,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:15,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-17 04:13:15,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-17 04:13:15,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:13:15,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:13:15,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:13:15,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:13:15,204 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:13:15,204 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:13:15,220 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:13:15,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:15,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,225 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-17 04:13:15,229 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-17 04:13:15,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:13:15,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:13:15,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:13:15,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:13:15,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:13:15,238 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:13:15,238 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:13:15,253 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:13:15,256 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-17 04:13:15,257 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-17 04:13:15,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-17 04:13:15,262 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:13:15,262 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:13:15,262 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:13:15,263 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-17 04:13:15,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-02-17 04:13:15,270 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:13:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:15,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:13:15,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:15,301 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 04:13:15,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:15,361 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-17 04:13:15,362 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-02-17 04:13:15,419 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 36 states and 54 transitions. Complement of second has 9 states. [2023-02-17 04:13:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-02-17 04:13:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-02-17 04:13:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2023-02-17 04:13:15,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 3 letters. Loop has 3 letters. [2023-02-17 04:13:15,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:15,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 6 letters. Loop has 3 letters. [2023-02-17 04:13:15,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:15,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 3 letters. Loop has 6 letters. [2023-02-17 04:13:15,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:15,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2023-02-17 04:13:15,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-17 04:13:15,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 15 states and 20 transitions. [2023-02-17 04:13:15,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-17 04:13:15,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-02-17 04:13:15,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2023-02-17 04:13:15,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:13:15,438 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2023-02-17 04:13:15,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2023-02-17 04:13:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-02-17 04:13:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:13:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2023-02-17 04:13:15,454 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2023-02-17 04:13:15,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:13:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 04:13:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:13:15,457 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-02-17 04:13:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:13:15,474 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2023-02-17 04:13:15,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2023-02-17 04:13:15,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-17 04:13:15,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2023-02-17 04:13:15,476 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-17 04:13:15,476 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-17 04:13:15,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2023-02-17 04:13:15,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 04:13:15,476 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-17 04:13:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2023-02-17 04:13:15,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-17 04:13:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:13:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-02-17 04:13:15,478 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-17 04:13:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 04:13:15,479 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-17 04:13:15,480 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-17 04:13:15,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-02-17 04:13:15,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-17 04:13:15,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:13:15,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:13:15,483 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-17 04:13:15,483 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:13:15,484 INFO L748 eck$LassoCheckResult]: Stem: 127#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 128#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_#t~nondet3#1, main_~k~0#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 129#L20 assume main_~k~0#1 >= 1;main_~i~0#1 := 0; 130#L22-2 [2023-02-17 04:13:15,484 INFO L750 eck$LassoCheckResult]: Loop: 130#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 125#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 126#L24-2 assume !(main_~j~0#1 <= main_~i~0#1); 131#L24-3 main_~i~0#1 := 1 + main_~i~0#1; 130#L22-2 [2023-02-17 04:13:15,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 2 times [2023-02-17 04:13:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:15,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982291680] [2023-02-17 04:13:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:15,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:15,497 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:15,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1363376, now seen corresponding path program 1 times [2023-02-17 04:13:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:15,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925150205] [2023-02-17 04:13:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:15,507 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:15,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126097, now seen corresponding path program 1 times [2023-02-17 04:13:15,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:15,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206432871] [2023-02-17 04:13:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:15,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:15,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:15,519 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:15,521 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:13:15,521 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:13:15,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:13:15,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:13:15,522 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:13:15,522 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,522 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:13:15,522 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:13:15,522 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2023-02-17 04:13:15,522 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:13:15,522 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:13:15,523 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,524 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,524 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,527 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:13:15,527 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:13:15,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-17 04:13:15,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:15,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:15,589 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:13:15,589 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:13:15,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:15,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-17 04:13:15,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:15,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:15,649 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:13:15,649 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:13:15,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:15,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,665 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-17 04:13:15,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:15,673 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:15,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:15,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,706 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-17 04:13:15,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:13:15,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:15,835 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:13:15,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:15,841 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:13:15,842 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:13:15,842 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:13:15,842 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:13:15,842 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:13:15,842 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:13:15,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:13:15,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2023-02-17 04:13:15,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:13:15,842 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:13:15,843 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,845 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,846 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:15,851 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:13:15,851 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:13:15,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,856 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-17 04:13:15,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-17 04:13:15,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:13:15,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:13:15,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:13:15,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:13:15,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:13:15,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:13:15,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:13:15,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:15,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:15,923 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:15,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-17 04:13:15,973 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-17 04:13:15,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:13:15,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:13:15,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:13:15,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:13:15,984 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:13:15,984 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:13:15,998 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:13:16,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-02-17 04:13:16,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,029 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:16,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-17 04:13:16,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-17 04:13:16,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:13:16,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:13:16,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:13:16,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:13:16,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:13:16,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:13:16,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:13:16,058 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:13:16,061 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-17 04:13:16,062 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-17 04:13:16,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,079 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:16,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-17 04:13:16,081 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:13:16,082 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:13:16,082 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:13:16,082 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~k~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2023-02-17 04:13:16,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-02-17 04:13:16,086 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:13:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:16,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:13:16,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:16,107 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:13:16,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:16,134 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-02-17 04:13:16,135 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:13:16,171 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 18 states and 23 transitions. Complement of second has 10 states. [2023-02-17 04:13:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-02-17 04:13:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:13:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 12 transitions. [2023-02-17 04:13:16,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 3 letters. Loop has 4 letters. [2023-02-17 04:13:16,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:16,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2023-02-17 04:13:16,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:16,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 3 letters. Loop has 8 letters. [2023-02-17 04:13:16,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:16,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2023-02-17 04:13:16,176 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-17 04:13:16,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 17 states and 22 transitions. [2023-02-17 04:13:16,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-17 04:13:16,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-17 04:13:16,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2023-02-17 04:13:16,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:13:16,178 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-02-17 04:13:16,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2023-02-17 04:13:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-02-17 04:13:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:13:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2023-02-17 04:13:16,180 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-02-17 04:13:16,180 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-02-17 04:13:16,180 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-17 04:13:16,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2023-02-17 04:13:16,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-17 04:13:16,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:13:16,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:13:16,181 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-17 04:13:16,181 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2023-02-17 04:13:16,182 INFO L748 eck$LassoCheckResult]: Stem: 206#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 207#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~k~0#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 213#L20 assume main_~k~0#1 >= 1;main_~i~0#1 := 0; 214#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 202#L24-2 [2023-02-17 04:13:16,182 INFO L750 eck$LassoCheckResult]: Loop: 202#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 203#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 215#L24-2 assume !(main_~j~0#1 <= main_~i~0#1); 210#L24-3 main_~i~0#1 := 1 + main_~i~0#1; 208#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 202#L24-2 [2023-02-17 04:13:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash 925612, now seen corresponding path program 1 times [2023-02-17 04:13:16,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:16,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202479320] [2023-02-17 04:13:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:16,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash 50576359, now seen corresponding path program 2 times [2023-02-17 04:13:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:16,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942376359] [2023-02-17 04:13:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash -440553700, now seen corresponding path program 2 times [2023-02-17 04:13:16,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:16,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228546102] [2023-02-17 04:13:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:16,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:13:16,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228546102] [2023-02-17 04:13:16,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228546102] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:13:16,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095592710] [2023-02-17 04:13:16,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:13:16,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:13:16,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,285 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:13:16,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-17 04:13:16,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 04:13:16,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:13:16,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 04:13:16,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:16,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:13:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:16,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095592710] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:13:16,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:13:16,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-17 04:13:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963714263] [2023-02-17 04:13:16,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:13:16,373 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:13:16,373 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:13:16,373 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:13:16,373 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:13:16,373 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:13:16,373 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,373 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:13:16,373 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:13:16,373 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Loop [2023-02-17 04:13:16,373 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:13:16,373 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:13:16,382 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,386 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,386 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,390 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:13:16,390 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:13:16,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,407 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:16,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:16,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:16,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-17 04:13:16,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:16,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,453 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:16,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-17 04:13:16,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:13:16,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:16,625 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:13:16,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:16,630 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:13:16,630 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:13:16,630 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:13:16,630 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:13:16,630 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:13:16,630 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,630 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:13:16,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:13:16,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Loop [2023-02-17 04:13:16,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:13:16,630 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:13:16,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,633 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,634 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,637 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:13:16,637 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:13:16,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,639 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:16,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-17 04:13:16,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-02-17 04:13:16,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-02-17 04:13:16,664 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-17 04:13:16,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:13:16,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:13:16,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:13:16,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:13:16,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:13:16,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:13:16,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:13:16,708 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:13:16,711 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-17 04:13:16,711 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-17 04:13:16,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,712 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:16,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-02-17 04:13:16,723 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:13:16,723 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:13:16,723 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:13:16,723 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2023-02-17 04:13:16,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:16,743 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:13:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:16,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:13:16,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:16,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:13:16,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 04:13:16,780 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 04:13:16,780 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:13:16,804 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 35 transitions. Complement of second has 6 states. [2023-02-17 04:13:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-17 04:13:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:13:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-17 04:13:16,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 5 letters. [2023-02-17 04:13:16,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:16,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 5 letters. [2023-02-17 04:13:16,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:16,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 10 letters. [2023-02-17 04:13:16,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:16,807 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 35 transitions. [2023-02-17 04:13:16,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-17 04:13:16,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 19 states and 26 transitions. [2023-02-17 04:13:16,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-02-17 04:13:16,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-02-17 04:13:16,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2023-02-17 04:13:16,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:13:16,811 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-02-17 04:13:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2023-02-17 04:13:16,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-02-17 04:13:16,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 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) [2023-02-17 04:13:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2023-02-17 04:13:16,815 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 25 transitions. [2023-02-17 04:13:16,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:13:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 04:13:16,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-17 04:13:16,816 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2023-02-17 04:13:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:13:16,843 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-02-17 04:13:16,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 32 transitions. [2023-02-17 04:13:16,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-17 04:13:16,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 29 transitions. [2023-02-17 04:13:16,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-02-17 04:13:16,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-02-17 04:13:16,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2023-02-17 04:13:16,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:13:16,844 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-02-17 04:13:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2023-02-17 04:13:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-02-17 04:13:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:13:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-02-17 04:13:16,848 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-02-17 04:13:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 04:13:16,850 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-02-17 04:13:16,851 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-17 04:13:16,851 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2023-02-17 04:13:16,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-17 04:13:16,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:13:16,852 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:13:16,852 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-17 04:13:16,852 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-17 04:13:16,853 INFO L748 eck$LassoCheckResult]: Stem: 396#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 397#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_#t~nondet3#1, main_~k~0#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 403#L20 assume main_~k~0#1 >= 1;main_~i~0#1 := 0; 399#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 400#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 394#L24-2 assume !(main_~j~0#1 <= main_~i~0#1); 395#L24-3 main_~i~0#1 := 1 + main_~i~0#1; 398#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 406#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 393#L24-2 [2023-02-17 04:13:16,853 INFO L750 eck$LassoCheckResult]: Loop: 393#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 393#L24-2 [2023-02-17 04:13:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 3 times [2023-02-17 04:13:16,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:16,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308745432] [2023-02-17 04:13:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:16,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,876 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:16,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2023-02-17 04:13:16,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:16,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18699317] [2023-02-17 04:13:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:16,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash -773943299, now seen corresponding path program 4 times [2023-02-17 04:13:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:13:16,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800524802] [2023-02-17 04:13:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:13:16,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:13:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:13:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:13:16,897 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:13:16,917 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:13:16,918 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:13:16,918 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:13:16,918 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:13:16,918 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:13:16,918 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:13:16,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:13:16,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2023-02-17 04:13:16,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:13:16,918 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:13:16,920 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,922 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,923 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,925 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,926 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,927 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,927 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,928 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:16,931 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:13:16,931 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:13:16,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,932 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:16,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:16,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:16,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-02-17 04:13:16,968 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:13:16,969 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:13:16,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:16,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:16,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:16,997 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:17,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:13:17,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:17,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-02-17 04:13:17,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:17,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:17,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:17,068 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:17,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:13:17,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:13:17,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-17 04:13:17,343 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:13:17,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-02-17 04:13:17,349 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:13:17,349 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:13:17,349 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:13:17,349 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:13:17,349 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:13:17,350 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:17,350 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:13:17,350 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:13:17,350 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2023-02-17 04:13:17,350 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:13:17,350 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:13:17,351 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:17,353 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:17,354 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:17,354 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:17,355 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:17,356 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:17,356 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:17,357 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:13:17,360 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:13:17,360 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:13:17,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:17,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:17,361 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:17,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-02-17 04:13:17,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-17 04:13:17,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:13:17,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:13:17,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:13:17,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:13:17,374 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:13:17,375 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:13:17,391 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:13:17,402 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2023-02-17 04:13:17,403 INFO L444 ModelExtractionUtils]: 5 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-02-17 04:13:17,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:13:17,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:13:17,418 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-17 04:13:17,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-02-17 04:13:17,421 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:13:17,442 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2023-02-17 04:13:17,443 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:13:17,443 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -2*ULTIMATE.start_main_~j~0#1 + 2*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [1*ULTIMATE.start_main_~n~0#1 - 1 >= 0, 1*ULTIMATE.start_main_~k~0#1 - 1 >= 0] [2023-02-17 04:13:17,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:17,461 INFO L156 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2023-02-17 04:13:17,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:17,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 04:13:17,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:17,525 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:13:17,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:17,526 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2023-02-17 04:13:17,526 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2023-02-17 04:13:17,554 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 22 states and 28 transitions. Complement of second has 7 states. [2023-02-17 04:13:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:13:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2023-02-17 04:13:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2023-02-17 04:13:17,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-17 04:13:17,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:17,556 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 04:13:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:17,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 04:13:17,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:17,603 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:13:17,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:17,603 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.3 stem predicates 1 loop predicates [2023-02-17 04:13:17,603 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2023-02-17 04:13:17,626 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 22 states and 28 transitions. Complement of second has 7 states. [2023-02-17 04:13:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:13:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2023-02-17 04:13:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2023-02-17 04:13:17,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-17 04:13:17,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:17,628 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 04:13:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:13:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:17,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 04:13:17,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:13:17,669 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:13:17,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:13:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:13:17,670 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2023-02-17 04:13:17,670 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2023-02-17 04:13:17,697 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 24 states and 31 transitions. Complement of second has 6 states. [2023-02-17 04:13:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:13:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2023-02-17 04:13:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2023-02-17 04:13:17,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-17 04:13:17,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:17,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 10 letters. Loop has 1 letters. [2023-02-17 04:13:17,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:17,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 9 letters. Loop has 2 letters. [2023-02-17 04:13:17,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:13:17,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2023-02-17 04:13:17,699 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-17 04:13:17,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2023-02-17 04:13:17,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-17 04:13:17,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-17 04:13:17,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-17 04:13:17,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 04:13:17,700 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 04:13:17,700 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 04:13:17,700 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 04:13:17,700 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-17 04:13:17,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-17 04:13:17,700 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-17 04:13:17,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-17 04:13:17,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 04:13:17 BoogieIcfgContainer [2023-02-17 04:13:17,706 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-17 04:13:17,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 04:13:17,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 04:13:17,707 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 04:13:17,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:13:14" (3/4) ... [2023-02-17 04:13:17,710 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 04:13:17,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 04:13:17,710 INFO L158 Benchmark]: Toolchain (without parser) took 3749.57ms. Allocated memory is still 155.2MB. Free memory was 119.8MB in the beginning and 69.8MB in the end (delta: 50.0MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2023-02-17 04:13:17,710 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 04:13:17,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.01ms. Allocated memory is still 155.2MB. Free memory was 119.8MB in the beginning and 110.7MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 04:13:17,711 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.09ms. Allocated memory is still 155.2MB. Free memory was 110.7MB in the beginning and 109.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 04:13:17,711 INFO L158 Benchmark]: Boogie Preprocessor took 19.69ms. Allocated memory is still 155.2MB. Free memory was 109.5MB in the beginning and 108.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 04:13:17,711 INFO L158 Benchmark]: RCFGBuilder took 190.08ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 99.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 04:13:17,711 INFO L158 Benchmark]: BuchiAutomizer took 3333.12ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 69.8MB in the end (delta: 30.0MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2023-02-17 04:13:17,711 INFO L158 Benchmark]: Witness Printer took 3.00ms. Allocated memory is still 155.2MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 04:13:17,712 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.01ms. Allocated memory is still 155.2MB. Free memory was 119.8MB in the beginning and 110.7MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.09ms. Allocated memory is still 155.2MB. Free memory was 110.7MB in the beginning and 109.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.69ms. Allocated memory is still 155.2MB. Free memory was 109.5MB in the beginning and 108.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 190.08ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 99.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3333.12ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 69.8MB in the end (delta: 30.0MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Witness Printer took 3.00ms. Allocated memory is still 155.2MB. Free memory is still 69.8MB. 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function -1 * i + k and consists of 6 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One nondeterministic module has affine ranking function -2 * j + n + 2 * i and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 3/4 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 117 IncrementalHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 32 mSDtfsCounter, 117 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital29 mio100 ax146 hnf100 lsp69 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf104 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 64ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-17 04:13:17,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:17,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-17 04:13:18,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-02-17 04:13:18,327 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