./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 626f3da6fd18561761a79d5d72b6e4952ec90284e3abc32807b89f761ebfb898 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:06:35,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:06:35,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:06:35,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:06:35,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:06:35,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:06:35,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:06:35,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:06:35,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:06:35,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:06:35,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:06:35,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:06:35,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:06:35,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:06:35,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:06:35,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:06:35,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:06:35,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:06:35,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:06:35,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:06:35,262 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:06:35,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:06:35,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:06:35,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:06:35,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:06:35,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:06:35,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:06:35,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:06:35,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:06:35,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:06:35,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:06:35,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:06:35,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:06:35,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:06:35,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:06:35,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:06:35,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:06:35,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:06:35,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:06:35,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:06:35,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:06:35,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:06:35,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:06:35,301 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:06:35,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:06:35,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:06:35,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:06:35,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:06:35,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:06:35,304 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:06:35,304 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:06:35,304 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:06:35,304 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:06:35,305 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:06:35,305 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:06:35,305 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:06:35,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:06:35,305 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:06:35,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:06:35,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:06:35,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:06:35,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:06:35,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:06:35,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:06:35,306 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:06:35,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:06:35,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:06:35,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:06:35,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:06:35,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:06:35,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:06:35,308 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:06:35,308 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 626f3da6fd18561761a79d5d72b6e4952ec90284e3abc32807b89f761ebfb898 [2022-07-13 03:06:35,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:06:35,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:06:35,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:06:35,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:06:35,533 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:06:35,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2022-07-13 03:06:35,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8079abda/4e3775c5be334c238e2e7e82d87b8c5e/FLAG3cf2e8a37 [2022-07-13 03:06:35,895 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:06:35,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2022-07-13 03:06:35,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8079abda/4e3775c5be334c238e2e7e82d87b8c5e/FLAG3cf2e8a37 [2022-07-13 03:06:36,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8079abda/4e3775c5be334c238e2e7e82d87b8c5e [2022-07-13 03:06:36,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:06:36,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:06:36,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:06:36,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:06:36,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:06:36,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461f58af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36, skipping insertion in model container [2022-07-13 03:06:36,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:06:36,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:06:36,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:06:36,467 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:06:36,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:06:36,497 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:06:36,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36 WrapperNode [2022-07-13 03:06:36,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:06:36,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:06:36,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:06:36,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:06:36,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,519 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-07-13 03:06:36,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:06:36,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:06:36,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:06:36,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:06:36,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:06:36,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:06:36,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:06:36,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:06:36,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (1/1) ... [2022-07-13 03:06:36,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:36,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:36,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:36,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-13 03:06:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:06:36,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:06:36,687 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:06:36,688 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:06:36,748 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:06:36,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:06:36,753 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 03:06:36,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:06:36 BoogieIcfgContainer [2022-07-13 03:06:36,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:06:36,755 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:06:36,762 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:06:36,764 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:06:36,764 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:06:36,765 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:06:36" (1/3) ... [2022-07-13 03:06:36,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63fd8849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:06:36, skipping insertion in model container [2022-07-13 03:06:36,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:06:36,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:06:36" (2/3) ... [2022-07-13 03:06:36,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63fd8849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:06:36, skipping insertion in model container [2022-07-13 03:06:36,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:06:36,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:06:36" (3/3) ... [2022-07-13 03:06:36,774 INFO L354 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1.c [2022-07-13 03:06:36,809 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:06:36,809 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:06:36,809 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:06:36,810 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:06:36,810 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:06:36,810 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:06:36,810 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:06:36,810 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:06:36,812 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) [2022-07-13 03:06:36,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-13 03:06:36,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:06:36,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:06:36,825 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:06:36,825 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:06:36,825 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:06:36,826 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) [2022-07-13 03:06:36,826 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-13 03:06:36,826 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:06:36,826 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:06:36,827 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:06:36,827 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:06:36,831 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2#L19-2true [2022-07-13 03:06:36,831 INFO L754 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 8#L19true assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_~y~0#1 - 1; 2#L19-2true [2022-07-13 03:06:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:06:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:36,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872592464] [2022-07-13 03:06:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:36,884 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:36,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-07-13 03:06:36,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:36,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072121307] [2022-07-13 03:06:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:36,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:36,902 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:36,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-13 03:06:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:36,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585468223] [2022-07-13 03:06:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:36,912 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:36,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:36,973 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:06:36,973 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:06:36,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:06:36,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:06:36,974 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:06:36,974 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:36,974 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:06:36,974 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:06:36,974 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2022-07-13 03:06:36,974 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:06:36,974 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:06:36,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:36,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,081 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:06:37,081 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:06:37,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-13 03:06:37,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:37,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:37,133 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:06:37,134 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:06:37,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-13 03:06:37,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-13 03:06:37,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:37,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:37,214 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:06:37,214 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:06:37,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:37,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-13 03:06:37,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:37,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:37,280 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:06:37,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:06:37,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:37,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-13 03:06:37,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:37,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:37,389 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:06:37,389 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=5, ULTIMATE.start_main_#t~nondet3#1=5} Honda state: {ULTIMATE.start_main_~x~0#1=5, ULTIMATE.start_main_#t~nondet3#1=5} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:06:37,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-13 03:06:37,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-13 03:06:37,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:37,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:37,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-07-13 03:06:37,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-13 03:06:37,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:06:37,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:37,497 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:06:37,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:37,501 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:06:37,501 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:06:37,501 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:06:37,501 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:06:37,501 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:06:37,501 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,501 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:06:37,501 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:06:37,506 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2022-07-13 03:06:37,506 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:06:37,506 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:06:37,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:37,585 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:06:37,588 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:06:37,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-13 03:06:37,620 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:37,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:37,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:37,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:37,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:37,631 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:06:37,631 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:06:37,644 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:06:37,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:37,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-13 03:06:37,665 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:37,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:37,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:37,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:37,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:37,674 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:06:37,674 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:06:37,687 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:06:37,702 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 [2022-07-13 03:06:37,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-13 03:06:37,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:37,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:37,712 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:06:37,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:37,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:37,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:37,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:06:37,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:06:37,714 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:06:37,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:37,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,731 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-13 03:06:37,736 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:37,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:37,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:06:37,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:37,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:37,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:37,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:06:37,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:06:37,759 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:06:37,761 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:06:37,762 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:06:37,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:37,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:37,780 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:37,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-13 03:06:37,808 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:06:37,808 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:06:37,808 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:06:37,808 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-07-13 03:06:37,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:37,826 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:06:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:37,857 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:06:37,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:37,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:06:37,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:06:37,910 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:06:37,911 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) [2022-07-13 03:06:37,946 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 29 states and 36 transitions. Complement of second has 7 states. [2022-07-13 03:06:37,947 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 [2022-07-13 03:06:37,952 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) [2022-07-13 03:06:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2022-07-13 03:06:37,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-13 03:06:37,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:37,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-13 03:06:37,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:37,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-13 03:06:37,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:37,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2022-07-13 03:06:37,970 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-13 03:06:37,972 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 9 states and 12 transitions. [2022-07-13 03:06:37,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-13 03:06:37,973 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-07-13 03:06:37,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2022-07-13 03:06:37,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:06:37,973 INFO L369 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-07-13 03:06:37,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2022-07-13 03:06:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-07-13 03:06:37,989 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) [2022-07-13 03:06:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-07-13 03:06:37,990 INFO L392 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-13 03:06:37,990 INFO L374 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-13 03:06:37,990 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:06:37,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-07-13 03:06:37,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-13 03:06:37,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:06:37,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:06:37,991 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 03:06:37,991 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:06:37,991 INFO L752 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 81#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 83#L19-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 77#L19 [2022-07-13 03:06:37,991 INFO L754 eck$LassoCheckResult]: Loop: 77#L19 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1; 76#L19-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 77#L19 [2022-07-13 03:06:37,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:37,991 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-13 03:06:37,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:37,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146177904] [2022-07-13 03:06:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:37,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:37,997 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:37,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-07-13 03:06:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:37,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36470491] [2022-07-13 03:06:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,004 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:38,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 1 times [2022-07-13 03:06:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:38,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572901672] [2022-07-13 03:06:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,010 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:38,041 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:06:38,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:06:38,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:06:38,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:06:38,041 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:06:38,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:06:38,042 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:06:38,042 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2022-07-13 03:06:38,042 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:06:38,042 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:06:38,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,087 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:06:38,087 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:06:38,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,089 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:38,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:38,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-13 03:06:38,135 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:06:38,135 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:06:38,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,154 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-13 03:06:38,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:38,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:38,166 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:06:38,166 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:06:38,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,183 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-13 03:06:38,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:38,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:38,208 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:06:38,208 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:06:38,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,225 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-13 03:06:38,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:38,227 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:38,238 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:06:38,238 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=1} Honda state: {ULTIMATE.start_main_~y~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:06:38,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,255 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-13 03:06:38,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:38,257 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:38,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,283 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) [2022-07-13 03:06:38,284 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 [2022-07-13 03:06:38,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:06:38,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:38,338 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:06:38,341 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 [2022-07-13 03:06:38,342 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:06:38,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:06:38,342 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:06:38,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:06:38,342 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:06:38,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:06:38,342 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:06:38,342 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2022-07-13 03:06:38,342 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:06:38,342 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:06:38,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,402 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:06:38,402 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:06:38,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,403 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-13 03:06:38,405 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:38,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:38,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:38,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:38,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:38,413 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:06:38,413 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:06:38,429 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:06:38,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,445 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-13 03:06:38,463 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:38,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:38,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:06:38,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:38,469 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-13 03:06:38,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:38,470 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-13 03:06:38,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:06:38,482 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:06:38,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,532 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-13 03:06:38,575 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:38,575 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 [2022-07-13 03:06:38,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:38,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:38,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:38,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:38,593 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:06:38,593 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:06:38,595 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:06:38,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,620 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,633 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:38,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:38,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:06:38,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:38,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:38,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:38,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:06:38,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:06:38,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-13 03:06:38,648 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:06:38,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-07-13 03:06:38,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,666 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-13 03:06:38,668 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:38,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:38,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:06:38,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:38,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:38,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:38,675 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:06:38,675 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:06:38,684 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:06:38,686 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:06:38,686 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:06:38,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,687 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,691 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:06:38,691 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:06:38,691 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:06:38,692 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-13 03:06:38,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-13 03:06:38,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,728 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:06:38,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:38,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:06:38,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:38,752 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:06:38,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:06:38,773 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:06:38,773 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 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) [2022-07-13 03:06:38,783 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 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 15 states and 20 transitions. Complement of second has 5 states. [2022-07-13 03:06:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:06:38,784 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) [2022-07-13 03:06:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2022-07-13 03:06:38,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2022-07-13 03:06:38,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:38,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-13 03:06:38,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:38,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 4 letters. [2022-07-13 03:06:38,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:38,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2022-07-13 03:06:38,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-13 03:06:38,785 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 10 states and 13 transitions. [2022-07-13 03:06:38,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-13 03:06:38,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-13 03:06:38,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-07-13 03:06:38,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:06:38,785 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-13 03:06:38,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-07-13 03:06:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2022-07-13 03:06:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) 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) [2022-07-13 03:06:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2022-07-13 03:06:38,786 INFO L392 hiAutomatonCegarLoop]: Abstraction has 8 states and 10 transitions. [2022-07-13 03:06:38,786 INFO L374 stractBuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2022-07-13 03:06:38,786 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:06:38,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2022-07-13 03:06:38,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-13 03:06:38,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:06:38,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:06:38,787 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2022-07-13 03:06:38,787 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:06:38,787 INFO L752 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 135#L19-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 136#L19 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_~y~0#1 - 1; 142#L19-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 140#L19 [2022-07-13 03:06:38,787 INFO L754 eck$LassoCheckResult]: Loop: 140#L19 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1; 141#L19-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 140#L19 [2022-07-13 03:06:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:38,787 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2022-07-13 03:06:38,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:38,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020760801] [2022-07-13 03:06:38,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:38,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,792 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:38,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:38,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2022-07-13 03:06:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:38,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007210726] [2022-07-13 03:06:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,798 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:38,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 1 times [2022-07-13 03:06:38,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:06:38,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933787024] [2022-07-13 03:06:38,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:06:38,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:06:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,804 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:06:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:06:38,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:06:38,822 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:06:38,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:06:38,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:06:38,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:06:38,822 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:06:38,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:06:38,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:06:38,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2022-07-13 03:06:38,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:06:38,823 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:06:38,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,874 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:06:38,874 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:06:38,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,878 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-13 03:06:38,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:06:38,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:38,916 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 [2022-07-13 03:06:38,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:38,918 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:38,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-13 03:06:38,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:06:38,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:06:38,974 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:06:38,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:38,979 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:06:38,979 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:06:38,979 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:06:38,979 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:06:38,979 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:06:38,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:38,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:06:38,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:06:38,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2022-07-13 03:06:38,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:06:38,979 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:06:38,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:38,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:06:39,040 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:06:39,041 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:06:39,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:39,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:39,056 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:39,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-13 03:06:39,058 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:06:39,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:06:39,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:06:39,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:06:39,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:06:39,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:06:39,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:06:39,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:06:39,076 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:06:39,078 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-13 03:06:39,078 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:06:39,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:06:39,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:06:39,079 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:06:39,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-13 03:06:39,081 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:06:39,081 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:06:39,081 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:06:39,081 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-13 03:06:39,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:39,097 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:06:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:39,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:06:39,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:39,117 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:06:39,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:06:39,123 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:06:39,124 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 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) [2022-07-13 03:06:39,133 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. 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 11 states and 14 transitions. Complement of second has 5 states. [2022-07-13 03:06:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:06:39,134 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) [2022-07-13 03:06:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2022-07-13 03:06:39,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-13 03:06:39,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:39,135 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:06:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:39,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:06:39,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:39,153 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:06:39,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:06:39,159 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:06:39,160 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 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) [2022-07-13 03:06:39,168 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. 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 11 states and 14 transitions. Complement of second has 5 states. [2022-07-13 03:06:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:06:39,169 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) [2022-07-13 03:06:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2022-07-13 03:06:39,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-13 03:06:39,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:39,169 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 03:06:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:06:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:39,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:06:39,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:06:39,185 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:06:39,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:06:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:06:39,191 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:06:39,191 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 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) [2022-07-13 03:06:39,200 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. 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 11 states and 14 transitions. Complement of second has 4 states. [2022-07-13 03:06:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:06:39,201 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) [2022-07-13 03:06:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-07-13 03:06:39,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-13 03:06:39,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:39,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-13 03:06:39,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:39,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-13 03:06:39,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:06:39,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2022-07-13 03:06:39,202 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:06:39,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2022-07-13 03:06:39,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 03:06:39,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 03:06:39,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 03:06:39,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:06:39,203 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:06:39,203 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:06:39,203 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 03:06:39,203 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 03:06:39,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 03:06:39,203 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 03:06:39,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 03:06:39,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:06:39 BoogieIcfgContainer [2022-07-13 03:06:39,209 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:06:39,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:06:39,210 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:06:39,210 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:06:39,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:06:36" (3/4) ... [2022-07-13 03:06:39,212 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 03:06:39,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:06:39,212 INFO L158 Benchmark]: Toolchain (without parser) took 2873.63ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.4MB in the beginning and 49.6MB in the end (delta: 7.8MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-07-13 03:06:39,213 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 62.9MB in the beginning and 62.8MB in the end (delta: 27.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:06:39,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.26ms. Allocated memory is still 92.3MB. Free memory was 57.1MB in the beginning and 69.2MB in the end (delta: -12.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-13 03:06:39,213 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.10ms. Allocated memory is still 92.3MB. Free memory was 69.2MB in the beginning and 67.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:06:39,213 INFO L158 Benchmark]: Boogie Preprocessor took 12.41ms. Allocated memory is still 92.3MB. Free memory was 67.9MB in the beginning and 67.1MB in the end (delta: 796.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:06:39,214 INFO L158 Benchmark]: RCFGBuilder took 220.52ms. Allocated memory is still 92.3MB. Free memory was 66.8MB in the beginning and 58.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:06:39,214 INFO L158 Benchmark]: BuchiAutomizer took 2454.06ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 58.8MB in the beginning and 50.3MB in the end (delta: 8.4MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2022-07-13 03:06:39,214 INFO L158 Benchmark]: Witness Printer took 2.37ms. Allocated memory is still 111.1MB. Free memory was 50.3MB in the beginning and 49.6MB in the end (delta: 771.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:06:39,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 62.9MB in the beginning and 62.8MB in the end (delta: 27.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.26ms. Allocated memory is still 92.3MB. Free memory was 57.1MB in the beginning and 69.2MB in the end (delta: -12.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.10ms. Allocated memory is still 92.3MB. Free memory was 69.2MB in the beginning and 67.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.41ms. Allocated memory is still 92.3MB. Free memory was 67.9MB in the beginning and 67.1MB in the end (delta: 796.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 220.52ms. Allocated memory is still 92.3MB. Free memory was 66.8MB in the beginning and 58.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2454.06ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 58.8MB in the beginning and 50.3MB in the end (delta: 8.4MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * Witness Printer took 2.37ms. Allocated memory is still 111.1MB. Free memory was 50.3MB in the beginning and 49.6MB in the end (delta: 771.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 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 [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 27 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax168 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 54ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-13 03:06:39,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:39,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-13 03:06:39,658 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