./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3dbbec33 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/CookSeeZuleger-TACAS2013-Fig8a-modified.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 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 14:41:57,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:41:57,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:41:57,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:41:57,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:41:57,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:41:57,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:41:57,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:41:57,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:41:57,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:41:57,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:41:57,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:41:57,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:41:57,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:41:57,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:41:57,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:41:57,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:41:57,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:41:57,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:41:57,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:41:57,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:41:57,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:41:57,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:41:57,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:41:57,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:41:57,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:41:57,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:41:57,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:41:57,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:41:57,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:41:57,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:41:57,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:41:57,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:41:57,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:41:57,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:41:57,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:41:57,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:41:57,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:41:57,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:41:57,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:41:57,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:41:57,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-14 14:41:57,497 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:41:57,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:41:57,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:41:57,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:41:57,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:41:57,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:41:57,499 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:41:57,500 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-14 14:41:57,500 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-14 14:41:57,500 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-14 14:41:57,501 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-14 14:41:57,501 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-14 14:41:57,501 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-14 14:41:57,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:41:57,501 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:41:57,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:41:57,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:41:57,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-14 14:41:57,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-14 14:41:57,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-14 14:41:57,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 14:41:57,503 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-14 14:41:57,503 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:41:57,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-14 14:41:57,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:41:57,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:41:57,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:41:57,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:41:57,505 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-14 14:41:57,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 [2023-02-14 14:41:57,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:41:57,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:41:57,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:41:57,786 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:41:57,786 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:41:57,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2023-02-14 14:41:58,954 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:41:59,152 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:41:59,153 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2023-02-14 14:41:59,158 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f860e7cbd/0b35d17eb6f24feea10ca5a3c1d7b8fe/FLAG83dcc66e5 [2023-02-14 14:41:59,171 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f860e7cbd/0b35d17eb6f24feea10ca5a3c1d7b8fe [2023-02-14 14:41:59,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:41:59,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:41:59,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:41:59,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:41:59,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:41:59,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a94bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59, skipping insertion in model container [2023-02-14 14:41:59,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:41:59,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:41:59,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:41:59,306 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:41:59,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:41:59,327 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:41:59,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59 WrapperNode [2023-02-14 14:41:59,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:41:59,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:41:59,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:41:59,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:41:59,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,354 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-02-14 14:41:59,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:41:59,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:41:59,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:41:59,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:41:59,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,371 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:41:59,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:41:59,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:41:59,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:41:59,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (1/1) ... [2023-02-14 14:41:59,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:41:59,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:41:59,406 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) [2023-02-14 14:41:59,426 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 [2023-02-14 14:41:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:41:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:41:59,510 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:41:59,514 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:41:59,570 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:41:59,575 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:41:59,576 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 14:41:59,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:41:59 BoogieIcfgContainer [2023-02-14 14:41:59,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:41:59,579 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-14 14:41:59,579 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-14 14:41:59,582 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-14 14:41:59,583 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:41:59,583 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.02 02:41:59" (1/3) ... [2023-02-14 14:41:59,584 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1353a58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 02:41:59, skipping insertion in model container [2023-02-14 14:41:59,584 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:41:59,584 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:41:59" (2/3) ... [2023-02-14 14:41:59,585 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1353a58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 02:41:59, skipping insertion in model container [2023-02-14 14:41:59,585 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:41:59,585 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:41:59" (3/3) ... [2023-02-14 14:41:59,586 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2023-02-14 14:41:59,635 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-14 14:41:59,635 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-14 14:41:59,635 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-14 14:41:59,635 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-14 14:41:59,635 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-14 14:41:59,636 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-14 14:41:59,636 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-14 14:41:59,636 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-14 14:41:59,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2023-02-14 14:41:59,653 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:41:59,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:41:59,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:41:59,657 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 14:41:59,657 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-14 14:41:59,657 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-14 14:41:59,658 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2023-02-14 14:41:59,658 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:41:59,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:41:59,659 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:41:59,659 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 14:41:59,659 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-14 14:41:59,664 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L18-2true [2023-02-14 14:41:59,665 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 != main_~K~0#1); 3#L18true assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 6#L18-2true [2023-02-14 14:41:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:41:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-14 14:41:59,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:41:59,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795486770] [2023-02-14 14:41:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:41:59,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:41:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:41:59,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:41:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:41:59,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:41:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:41:59,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-02-14 14:41:59,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:41:59,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128232718] [2023-02-14 14:41:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:41:59,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:41:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:41:59,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:41:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:41:59,772 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:41:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:41:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-02-14 14:41:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:41:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680415792] [2023-02-14 14:41:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:41:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:41:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:41:59,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:41:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:41:59,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:41:59,888 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:41:59,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:41:59,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:41:59,905 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:41:59,905 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 14:41:59,905 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:41:59,906 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:41:59,906 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:41:59,906 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2023-02-14 14:41:59,906 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:41:59,906 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:41:59,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:41:59,974 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:41:59,978 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:00,074 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:00,075 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 14:42:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:00,109 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) [2023-02-14 14:42:00,143 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 [2023-02-14 14:42:00,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:00,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:00,166 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:00,166 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: [] [2023-02-14 14:42:00,177 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 [2023-02-14 14:42:00,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:00,180 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) [2023-02-14 14:42:00,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:00,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:00,198 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 [2023-02-14 14:42:00,217 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:00,217 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: [] [2023-02-14 14:42:00,224 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 [2023-02-14 14:42:00,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:00,227 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) [2023-02-14 14:42:00,230 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 [2023-02-14 14:42:00,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:00,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:00,263 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 [2023-02-14 14:42:00,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:00,267 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) [2023-02-14 14:42:00,277 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 [2023-02-14 14:42:00,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 14:42:00,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:00,401 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 14:42:00,406 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 [2023-02-14 14:42:00,407 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:00,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:00,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:00,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:00,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 14:42:00,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:00,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:00,408 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2023-02-14 14:42:00,408 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:00,408 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:00,410 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:00,414 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:00,418 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:00,472 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:00,476 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 14:42:00,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:00,479 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) [2023-02-14 14:42:00,490 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 [2023-02-14 14:42:00,490 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 [2023-02-14 14:42:00,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:00,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:00,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:00,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:00,504 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:00,504 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:00,520 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:42:00,526 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 [2023-02-14 14:42:00,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:00,529 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) [2023-02-14 14:42:00,540 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 [2023-02-14 14:42:00,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:00,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:00,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:00,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:00,555 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:00,557 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:00,566 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 [2023-02-14 14:42:00,566 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:42:00,572 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 [2023-02-14 14:42:00,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:00,574 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) [2023-02-14 14:42:00,589 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 [2023-02-14 14:42:00,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:00,598 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 14:42:00,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:00,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:00,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:00,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 14:42:00,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 14:42:00,604 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 [2023-02-14 14:42:00,613 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 14:42:00,618 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-14 14:42:00,619 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-14 14:42:00,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:00,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:00,679 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) [2023-02-14 14:42:00,680 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 [2023-02-14 14:42:00,681 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 14:42:00,681 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 14:42:00,682 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 14:42:00,682 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2023-02-14 14:42:00,688 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 [2023-02-14 14:42:00,692 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 14:42:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:00,732 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 14:42:00,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:00,748 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:42:00,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:00,794 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 [2023-02-14 14:42:00,796 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-14 14:42:00,837 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 8 states. [2023-02-14 14:42:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-14 14:42:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2023-02-14 14:42:00,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2023-02-14 14:42:00,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:00,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-14 14:42:00,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:00,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-14 14:42:00,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:00,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2023-02-14 14:42:00,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:42:00,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2023-02-14 14:42:00,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-14 14:42:00,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-02-14 14:42:00,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-02-14 14:42:00,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:42:00,853 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-14 14:42:00,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-02-14 14:42:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-14 14:42:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-02-14 14:42:00,875 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-14 14:42:00,876 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-14 14:42:00,876 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-14 14:42:00,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2023-02-14 14:42:00,877 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:42:00,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:42:00,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:42:00,877 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-14 14:42:00,877 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-14 14:42:00,878 INFO L748 eck$LassoCheckResult]: Stem: 76#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 77#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_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 78#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 71#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 72#L18-2 [2023-02-14 14:42:00,878 INFO L750 eck$LassoCheckResult]: Loop: 72#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 75#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 72#L18-2 [2023-02-14 14:42:00,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:00,879 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-02-14 14:42:00,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:00,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364673118] [2023-02-14 14:42:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:00,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:00,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:00,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2023-02-14 14:42:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:00,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28719054] [2023-02-14 14:42:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:00,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:00,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:00,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2023-02-14 14:42:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:00,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044371832] [2023-02-14 14:42:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:00,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:42:00,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044371832] [2023-02-14 14:42:00,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044371832] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:42:00,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:42:00,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:42:00,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493431268] [2023-02-14 14:42:00,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:42:01,013 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:01,014 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:01,014 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:01,014 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:01,014 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 14:42:01,014 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:01,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:01,014 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2023-02-14 14:42:01,014 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:01,014 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:01,016 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,020 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,024 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,070 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:01,070 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 14:42:01,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,072 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) [2023-02-14 14:42:01,075 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 [2023-02-14 14:42:01,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:01,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:01,097 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:01,097 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: [] [2023-02-14 14:42:01,103 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 [2023-02-14 14:42:01,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,105 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) [2023-02-14 14:42:01,108 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 [2023-02-14 14:42:01,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:01,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:01,123 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:01,123 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: [] [2023-02-14 14:42:01,126 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 [2023-02-14 14:42:01,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,127 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) [2023-02-14 14:42:01,129 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 [2023-02-14 14:42:01,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:01,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:01,147 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 [2023-02-14 14:42:01,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,153 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) [2023-02-14 14:42:01,155 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 [2023-02-14 14:42:01,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 14:42:01,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:01,262 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 14:42:01,266 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 [2023-02-14 14:42:01,266 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:01,266 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:01,266 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:01,266 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:01,266 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 14:42:01,266 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,266 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:01,266 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:01,266 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2023-02-14 14:42:01,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:01,266 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:01,268 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,271 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,278 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,319 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:01,320 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 14:42:01,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,321 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) [2023-02-14 14:42:01,332 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 [2023-02-14 14:42:01,333 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 [2023-02-14 14:42:01,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:01,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:01,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:01,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:01,342 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:01,343 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:01,348 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:42:01,355 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 [2023-02-14 14:42:01,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,357 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) [2023-02-14 14:42:01,367 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 [2023-02-14 14:42:01,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:01,375 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 14:42:01,375 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:01,375 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:01,375 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:01,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 14:42:01,378 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 14:42:01,380 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 [2023-02-14 14:42:01,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 14:42:01,395 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-14 14:42:01,395 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-14 14:42:01,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,398 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) [2023-02-14 14:42:01,401 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 14:42:01,401 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 14:42:01,401 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 14:42:01,401 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2023-02-14 14:42:01,403 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 [2023-02-14 14:42:01,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:01,409 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 14:42:01,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:01,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 14:42:01,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:01,434 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:42:01,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:01,450 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 [2023-02-14 14:42:01,450 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-02-14 14:42:01,460 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 12 states and 17 transitions. Complement of second has 5 states. [2023-02-14 14:42:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-02-14 14:42:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2023-02-14 14:42:01,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-14 14:42:01,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:01,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2023-02-14 14:42:01,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:01,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2023-02-14 14:42:01,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:01,463 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2023-02-14 14:42:01,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:42:01,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2023-02-14 14:42:01,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-14 14:42:01,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-14 14:42:01,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2023-02-14 14:42:01,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:42:01,465 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-14 14:42:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2023-02-14 14:42:01,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-02-14 14:42:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2023-02-14 14:42:01,467 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-14 14:42:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:42:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 14:42:01,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 14:42:01,471 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2023-02-14 14:42:01,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:42:01,489 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2023-02-14 14:42:01,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2023-02-14 14:42:01,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:42:01,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2023-02-14 14:42:01,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-14 14:42:01,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-14 14:42:01,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2023-02-14 14:42:01,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:42:01,493 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-02-14 14:42:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2023-02-14 14:42:01,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2023-02-14 14:42:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2023-02-14 14:42:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2023-02-14 14:42:01,495 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-14 14:42:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 14:42:01,497 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-14 14:42:01,497 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-14 14:42:01,498 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2023-02-14 14:42:01,499 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:42:01,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:42:01,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:42:01,499 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-14 14:42:01,499 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-14 14:42:01,500 INFO L748 eck$LassoCheckResult]: Stem: 158#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 159#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 160#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 154#L18 [2023-02-14 14:42:01,500 INFO L750 eck$LassoCheckResult]: Loop: 154#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 155#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 154#L18 [2023-02-14 14:42:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-14 14:42:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:01,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037447077] [2023-02-14 14:42:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:01,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:01,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:01,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:01,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2023-02-14 14:42:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:01,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549227328] [2023-02-14 14:42:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:01,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:01,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:01,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:01,533 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2023-02-14 14:42:01,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:01,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:01,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430093881] [2023-02-14 14:42:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:01,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:01,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:01,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:01,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:01,570 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:01,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:01,570 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:01,570 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:01,570 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 14:42:01,570 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,570 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:01,570 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:01,570 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2023-02-14 14:42:01,571 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:01,571 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:01,572 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,575 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,590 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,638 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:01,639 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 14:42:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,641 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) [2023-02-14 14:42:01,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:01,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:01,665 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 [2023-02-14 14:42:01,677 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:01,677 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 14:42:01,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:01,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,685 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:01,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:01,696 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:01,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-14 14:42:01,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:01,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:01,728 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) [2023-02-14 14:42:01,729 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 [2023-02-14 14:42:01,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 14:42:01,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:01,931 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 14:42:01,935 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 [2023-02-14 14:42:01,935 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:01,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:01,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:01,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:01,936 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 14:42:01,936 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:01,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:01,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:01,936 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2023-02-14 14:42:01,936 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:01,936 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:01,937 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,941 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:01,959 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:02,015 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:02,015 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 14:42:02,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,017 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) [2023-02-14 14:42:02,020 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 [2023-02-14 14:42:02,021 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 [2023-02-14 14:42:02,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:02,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:02,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:02,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:02,031 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:02,031 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:02,057 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:42:02,063 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 [2023-02-14 14:42:02,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,065 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) [2023-02-14 14:42:02,075 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 [2023-02-14 14:42:02,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:02,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 14:42:02,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:02,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:02,083 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:02,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 14:42:02,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 14:42:02,087 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 [2023-02-14 14:42:02,101 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 14:42:02,105 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-14 14:42:02,105 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-14 14:42:02,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,107 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) [2023-02-14 14:42:02,109 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 [2023-02-14 14:42:02,111 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 14:42:02,111 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 14:42:02,111 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 14:42:02,111 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2023-02-14 14:42:02,115 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 [2023-02-14 14:42:02,116 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 14:42:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 14:42:02,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,138 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 14:42:02,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:02,170 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 [2023-02-14 14:42:02,170 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:02,179 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 14 transitions. Complement of second has 5 states. [2023-02-14 14:42:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-14 14:42:02,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2023-02-14 14:42:02,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:02,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-14 14:42:02,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:02,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2023-02-14 14:42:02,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:02,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2023-02-14 14:42:02,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:42:02,182 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2023-02-14 14:42:02,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-14 14:42:02,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-14 14:42:02,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2023-02-14 14:42:02,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:42:02,183 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-14 14:42:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2023-02-14 14:42:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-14 14:42:02,184 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) [2023-02-14 14:42:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-02-14 14:42:02,184 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-14 14:42:02,184 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-14 14:42:02,184 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-14 14:42:02,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-02-14 14:42:02,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-14 14:42:02,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:42:02,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:42:02,185 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2023-02-14 14:42:02,185 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-14 14:42:02,186 INFO L748 eck$LassoCheckResult]: Stem: 213#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 214#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_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 212#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 210#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 211#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 208#L18 [2023-02-14 14:42:02,186 INFO L750 eck$LassoCheckResult]: Loop: 208#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 209#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 208#L18 [2023-02-14 14:42:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2023-02-14 14:42:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:02,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338565165] [2023-02-14 14:42:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:02,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:02,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:02,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2023-02-14 14:42:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:02,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648627487] [2023-02-14 14:42:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:02,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:02,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2023-02-14 14:42:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:02,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580273206] [2023-02-14 14:42:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:02,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:42:02,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580273206] [2023-02-14 14:42:02,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580273206] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:42:02,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:42:02,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:42:02,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326475540] [2023-02-14 14:42:02,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:42:02,258 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:02,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:02,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:02,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:02,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 14:42:02,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:02,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:02,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2023-02-14 14:42:02,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:02,259 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:02,260 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:02,262 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:02,265 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:02,299 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:02,299 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 14:42:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,300 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) [2023-02-14 14:42:02,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:02,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:02,321 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 [2023-02-14 14:42:02,323 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:02,323 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 14:42:02,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-02-14 14:42:02,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,327 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) [2023-02-14 14:42:02,328 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 [2023-02-14 14:42:02,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:02,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:02,385 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:02,385 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: [] [2023-02-14 14:42:02,388 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 [2023-02-14 14:42:02,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,389 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) [2023-02-14 14:42:02,391 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 [2023-02-14 14:42:02,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:02,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:02,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:02,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,420 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) [2023-02-14 14:42:02,421 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 [2023-02-14 14:42:02,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 14:42:02,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:02,676 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 14:42:02,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-02-14 14:42:02,680 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:02,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:02,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:02,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:02,680 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 14:42:02,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:02,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:02,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2023-02-14 14:42:02,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:02,681 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:02,681 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:02,693 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:02,706 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:02,739 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:02,739 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 14:42:02,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,741 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) [2023-02-14 14:42:02,743 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 [2023-02-14 14:42:02,744 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 [2023-02-14 14:42:02,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:02,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:02,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:02,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:02,754 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:02,754 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:02,766 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:42:02,771 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 [2023-02-14 14:42:02,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,772 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:02,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-02-14 14:42:02,778 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 [2023-02-14 14:42:02,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:02,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 14:42:02,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:02,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:02,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:02,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 14:42:02,786 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 14:42:02,788 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 14:42:02,790 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-14 14:42:02,790 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-14 14:42:02,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:02,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:02,792 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:02,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-02-14 14:42:02,796 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 14:42:02,796 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 14:42:02,796 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 14:42:02,796 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2023-02-14 14:42:02,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:02,802 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 14:42:02,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 14:42:02,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,834 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 14:42:02,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:02,857 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 [2023-02-14 14:42:02,857 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-14 14:42:02,862 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 8 states and 9 transitions. Complement of second has 3 states. [2023-02-14 14:42:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-14 14:42:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2023-02-14 14:42:02,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-14 14:42:02,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:02,866 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 14:42:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 14:42:02,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,893 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 14:42:02,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:02,914 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 14:42:02,914 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-14 14:42:02,921 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 8 states and 9 transitions. Complement of second has 3 states. [2023-02-14 14:42:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-14 14:42:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2023-02-14 14:42:02,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-14 14:42:02,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:02,923 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 14:42:02,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 14:42:02,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:02,954 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 14:42:02,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:02,973 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 14:42:02,974 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-14 14:42:02,987 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 9 states and 10 transitions. Complement of second has 4 states. [2023-02-14 14:42:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-02-14 14:42:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-14 14:42:02,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-14 14:42:02,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:02,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2023-02-14 14:42:02,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:02,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2023-02-14 14:42:02,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:02,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2023-02-14 14:42:02,996 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 14:42:02,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2023-02-14 14:42:02,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-14 14:42:02,997 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-14 14:42:02,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-14 14:42:02,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-14 14:42:02,997 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:42:02,997 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:42:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:42:02,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 14:42:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 14:42:03,000 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2023-02-14 14:42:03,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:42:03,000 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-02-14 14:42:03,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-02-14 14:42:03,000 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 14:42:03,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 14:42:03,001 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-14 14:42:03,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-14 14:42:03,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-14 14:42:03,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-14 14:42:03,001 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:42:03,001 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:42:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 14:42:03,003 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:42:03,003 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-14 14:42:03,003 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-14 14:42:03,003 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 14:42:03,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-14 14:42:03,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.02 02:42:03 BoogieIcfgContainer [2023-02-14 14:42:03,019 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-14 14:42:03,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 14:42:03,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 14:42:03,020 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 14:42:03,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:41:59" (3/4) ... [2023-02-14 14:42:03,023 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-14 14:42:03,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 14:42:03,024 INFO L158 Benchmark]: Toolchain (without parser) took 3849.43ms. Allocated memory was 132.1MB in the beginning and 161.5MB in the end (delta: 29.4MB). Free memory was 87.4MB in the beginning and 69.5MB in the end (delta: 17.9MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2023-02-14 14:42:03,024 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 132.1MB. Free memory was 103.0MB in the beginning and 103.0MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:42:03,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.37ms. Allocated memory is still 132.1MB. Free memory was 87.4MB in the beginning and 78.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 14:42:03,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.82ms. Allocated memory is still 132.1MB. Free memory was 78.1MB in the beginning and 76.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 14:42:03,028 INFO L158 Benchmark]: Boogie Preprocessor took 16.72ms. Allocated memory is still 132.1MB. Free memory was 76.9MB in the beginning and 76.0MB in the end (delta: 862.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:42:03,028 INFO L158 Benchmark]: RCFGBuilder took 203.75ms. Allocated memory is still 132.1MB. Free memory was 76.0MB in the beginning and 67.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 14:42:03,028 INFO L158 Benchmark]: BuchiAutomizer took 3440.05ms. Allocated memory was 132.1MB in the beginning and 161.5MB in the end (delta: 29.4MB). Free memory was 67.7MB in the beginning and 70.5MB in the end (delta: -2.9MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2023-02-14 14:42:03,029 INFO L158 Benchmark]: Witness Printer took 4.15ms. Allocated memory is still 161.5MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:42:03,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 132.1MB. Free memory was 103.0MB in the beginning and 103.0MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 152.37ms. Allocated memory is still 132.1MB. Free memory was 87.4MB in the beginning and 78.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.82ms. Allocated memory is still 132.1MB. Free memory was 78.1MB in the beginning and 76.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.72ms. Allocated memory is still 132.1MB. Free memory was 76.9MB in the beginning and 76.0MB in the end (delta: 862.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 203.75ms. Allocated memory is still 132.1MB. Free memory was 76.0MB in the beginning and 67.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3440.05ms. Allocated memory was 132.1MB in the beginning and 161.5MB in the end (delta: 29.4MB). Free memory was 67.7MB in the beginning and 70.5MB in the end (delta: -2.9MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Witness Printer took 4.15ms. Allocated memory is still 161.5MB. Free memory is still 69.5MB. 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 K + -1 * x and consists of 5 locations. One deterministic module has affine ranking function K + -1 * x and consists of 3 locations. One deterministic module has affine ranking function x + -1 * K and consists of 3 locations. One nondeterministic module has affine ranking function x + -1 * K and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 29 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax182 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf95 smp68 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 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! [2023-02-14 14:42:03,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:03,242 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 [2023-02-14 14:42:03,445 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