./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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-Fig7b.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 30d2fee99df05baf23c51b2012b75d1af7c997c2ecdfb3b70ac3637daf8339a3 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 17:03:18,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:03:18,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:03:18,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:03:18,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:03:18,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:03:18,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:03:18,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:03:18,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:03:18,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:03:18,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:03:18,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:03:18,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:03:18,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:03:18,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:03:18,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:03:18,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:03:18,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:03:18,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:03:18,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:03:18,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:03:18,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:03:18,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:03:18,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:03:18,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:03:18,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:03:18,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:03:18,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:03:18,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:03:18,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:03:18,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:03:18,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:03:18,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:03:18,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:03:18,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:03:18,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:03:18,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:03:18,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:03:18,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:03:18,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:03:18,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:03:18,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:03:18,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:03:18,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:03:18,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:03:18,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:03:18,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:03:18,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:03:18,526 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:03:18,526 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:03:18,526 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:03:18,526 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:03:18,527 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:03:18,527 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:03:18,527 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:03:18,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:03:18,527 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:03:18,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:03:18,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:03:18,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:03:18,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:03:18,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:03:18,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:03:18,528 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:03:18,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:03:18,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:03:18,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:03:18,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:03:18,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:03:18,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:03:18,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:03:18,530 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:03:18,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30d2fee99df05baf23c51b2012b75d1af7c997c2ecdfb3b70ac3637daf8339a3 [2021-12-19 17:03:18,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:03:18,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:03:18,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:03:18,723 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:03:18,723 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:03:18,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2021-12-19 17:03:18,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30505b77d/54bc85855b2c40fc953233ea2812d88a/FLAG7797c283c [2021-12-19 17:03:19,101 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:03:19,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2021-12-19 17:03:19,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30505b77d/54bc85855b2c40fc953233ea2812d88a/FLAG7797c283c [2021-12-19 17:03:19,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30505b77d/54bc85855b2c40fc953233ea2812d88a [2021-12-19 17:03:19,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:03:19,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:03:19,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:03:19,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:03:19,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:03:19,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590ec675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19, skipping insertion in model container [2021-12-19 17:03:19,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:03:19,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:03:19,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:03:19,261 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:03:19,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:03:19,281 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:03:19,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19 WrapperNode [2021-12-19 17:03:19,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:03:19,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:03:19,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:03:19,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:03:19,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,308 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2021-12-19 17:03:19,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:03:19,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:03:19,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:03:19,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:03:19,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:03:19,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:03:19,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:03:19,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:03:19,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (1/1) ... [2021-12-19 17:03:19,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:19,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:19,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 17:03:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:03:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:03:19,432 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:03:19,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:03:19,491 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:03:19,496 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:03:19,496 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 17:03:19,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:03:19 BoogieIcfgContainer [2021-12-19 17:03:19,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:03:19,499 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:03:19,499 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:03:19,501 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:03:19,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:03:19,502 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:03:19" (1/3) ... [2021-12-19 17:03:19,503 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f11ac00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:03:19, skipping insertion in model container [2021-12-19 17:03:19,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:03:19,503 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:03:19" (2/3) ... [2021-12-19 17:03:19,504 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f11ac00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:03:19, skipping insertion in model container [2021-12-19 17:03:19,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:03:19,504 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:03:19" (3/3) ... [2021-12-19 17:03:19,505 INFO L388 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig7b.c [2021-12-19 17:03:19,532 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:03:19,533 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:03:19,533 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:03:19,533 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:03:19,533 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:03:19,533 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:03:19,533 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:03:19,533 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:03:19,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:19,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:03:19,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:03:19,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:03:19,554 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:03:19,554 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-19 17:03:19,554 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:03:19,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:19,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:03:19,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:03:19,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:03:19,555 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:03:19,555 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-19 17:03:19,559 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#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_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 5#L23-2true [2021-12-19 17:03:19,559 INFO L793 eck$LassoCheckResult]: Loop: 5#L23-2true assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 7#L21true assume 0 != main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_~x~0#1 - 1; 5#L23-2true [2021-12-19 17:03:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:03:19,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:19,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376674550] [2021-12-19 17:03:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:19,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:19,624 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:19,634 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2021-12-19 17:03:19,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:19,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331537373] [2021-12-19 17:03:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:19,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:19,651 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:19,671 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:19,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:19,673 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-19 17:03:19,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:19,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109381428] [2021-12-19 17:03:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:19,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:19,677 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:19,681 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:19,757 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:19,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:19,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:19,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:19,758 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:03:19,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:19,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:19,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:19,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration1_Loop [2021-12-19 17:03:19,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:19,759 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:19,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:19,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:19,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:19,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:19,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:19,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:19,833 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:19,833 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:03:19,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:19,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:19,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:19,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-19 17:03:19,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:19,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:19,859 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:19,859 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:19,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:19,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:19,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:19,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:19,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-19 17:03:19,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:19,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:19,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:19,903 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:19,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:19,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:19,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:19,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:19,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 17:03:19,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:19,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:19,948 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:19,948 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: [] [2021-12-19 17:03:19,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:19,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:19,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:19,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:19,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 17:03:19,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:19,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:19,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:19,992 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0#1=1} Honda state: {ULTIMATE.start_main_~z~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:20,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 17:03:20,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:20,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 17:03:20,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:03:20,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,093 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:03:20,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,099 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:20,099 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:20,099 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:20,099 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:20,099 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:03:20,099 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,099 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:20,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:20,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration1_Loop [2021-12-19 17:03:20,100 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:20,100 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:20,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,175 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:20,178 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:03:20,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 17:03:20,183 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:20,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:20,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:20,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:20,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:20,193 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:03:20,193 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:03:20,210 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:20,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,229 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 17:03:20,231 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:20,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:20,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:20,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:20,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:20,240 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:03:20,240 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:03:20,263 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:20,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,280 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-19 17:03:20,283 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:20,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:20,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:20,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:20,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:20,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:20,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:20,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:20,305 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:20,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,341 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:20,347 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:20,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:20,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:20,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:20,348 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:20,349 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:20,349 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:20,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-19 17:03:20,355 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:20,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-19 17:03:20,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:20,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:20,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:20,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:20,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:20,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:20,398 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:20,398 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:20,412 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:03:20,416 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:03:20,416 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:03:20,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,418 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,441 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:03:20,441 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:03:20,447 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:03:20,447 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-19 17:03:20,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-19 17:03:20,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,468 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:03:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:20,488 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:20,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:20,497 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:20,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:20,529 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:03:20,530 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-12-19 17:03:20,557 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 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 38 states and 49 transitions. Complement of second has 8 states. [2021-12-19 17:03:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:20,562 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) [2021-12-19 17:03:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-12-19 17:03:20,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2021-12-19 17:03:20,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:20,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-19 17:03:20,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:20,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-19 17:03:20,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:20,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 49 transitions. [2021-12-19 17:03:20,567 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-19 17:03:20,569 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2021-12-19 17:03:20,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-19 17:03:20,570 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-19 17:03:20,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2021-12-19 17:03:20,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:03:20,571 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-12-19 17:03:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2021-12-19 17:03:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-19 17:03:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-12-19 17:03:20,587 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-19 17:03:20,587 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-19 17:03:20,587 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:03:20,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-12-19 17:03:20,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-19 17:03:20,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:03:20,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:03:20,588 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:03:20,588 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:03:20,589 INFO L791 eck$LassoCheckResult]: Stem: 87#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 88#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_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 98#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 90#L21 [2021-12-19 17:03:20,589 INFO L793 eck$LassoCheckResult]: Loop: 90#L21 assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 93#L23 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 89#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 90#L21 [2021-12-19 17:03:20,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:20,589 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:03:20,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:20,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380218094] [2021-12-19 17:03:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:20,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:20,593 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:20,595 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:20,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash 45767, now seen corresponding path program 1 times [2021-12-19 17:03:20,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:20,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262388927] [2021-12-19 17:03:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:20,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:20,601 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:20,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:20,605 INFO L85 PathProgramCache]: Analyzing trace with hash 889694400, now seen corresponding path program 1 times [2021-12-19 17:03:20,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:20,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675431179] [2021-12-19 17:03:20,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:20,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:20,609 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:20,613 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:20,644 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:20,644 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:20,644 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:20,644 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:20,645 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:03:20,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:20,645 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:20,645 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration2_Loop [2021-12-19 17:03:20,645 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:20,645 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:20,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:20,706 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:20,706 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:03:20,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,708 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-19 17:03:20,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:20,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:20,732 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:20,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,750 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-19 17:03:20,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:20,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:20,774 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: [] [2021-12-19 17:03:20,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,793 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-19 17:03:20,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:20,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,817 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:20,817 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:20,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,836 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-19 17:03:20,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:20,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,852 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:20,852 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0#1=4, ULTIMATE.start_main_#t~nondet5#1=4} Honda state: {ULTIMATE.start_main_~z~0#1=4, ULTIMATE.start_main_#t~nondet5#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:20,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-19 17:03:20,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,871 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-19 17:03:20,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:20,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:20,895 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=0} Honda state: {ULTIMATE.start_main_#t~nondet3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:20,915 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 [2021-12-19 17:03:20,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,917 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-19 17:03:20,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:20,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:20,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:20,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:20,963 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:20,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:03:20,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:20,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-19 17:03:21,023 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:03:21,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:21,026 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:21,027 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:21,027 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:21,027 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:21,027 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:03:21,027 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,027 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:21,027 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:21,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration2_Loop [2021-12-19 17:03:21,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:21,027 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:21,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,093 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:21,093 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:03:21,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,100 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:21,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:21,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:21,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:21,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:21,132 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:03:21,132 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:03:21,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-19 17:03:21,138 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:21,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-19 17:03:21,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,156 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-19 17:03:21,158 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:21,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:21,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:21,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:21,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:21,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:21,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:21,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:21,180 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:21,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:21,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,198 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-19 17:03:21,200 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:21,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:21,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:21,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:21,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:21,207 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:03:21,207 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:03:21,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:21,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:21,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,272 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-19 17:03:21,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:21,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:21,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:21,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:21,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:21,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:21,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:21,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:21,296 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:21,312 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 [2021-12-19 17:03:21,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,313 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-19 17:03:21,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:21,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:21,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:21,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:21,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:21,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:21,321 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:21,321 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:21,343 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:21,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:21,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,360 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-19 17:03:21,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:21,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:21,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:21,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:21,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:21,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:21,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:21,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:21,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:03:21,386 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-19 17:03:21,386 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:03:21,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,387 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-19 17:03:21,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:03:21,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:03:21,389 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:03:21,389 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-19 17:03:21,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-19 17:03:21,405 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:03:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:21,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:21,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:21,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:21,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:21,448 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:03:21,449 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:21,459 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 50 transitions. Complement of second has 6 states. [2021-12-19 17:03:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-12-19 17:03:21,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2021-12-19 17:03:21,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:21,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2021-12-19 17:03:21,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:21,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-19 17:03:21,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:21,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 50 transitions. [2021-12-19 17:03:21,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:03:21,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 28 states and 43 transitions. [2021-12-19 17:03:21,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-19 17:03:21,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-19 17:03:21,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 43 transitions. [2021-12-19 17:03:21,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:03:21,463 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2021-12-19 17:03:21,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 43 transitions. [2021-12-19 17:03:21,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-12-19 17:03:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2021-12-19 17:03:21,465 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 39 transitions. [2021-12-19 17:03:21,465 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 39 transitions. [2021-12-19 17:03:21,466 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:03:21,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 39 transitions. [2021-12-19 17:03:21,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:03:21,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:03:21,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:03:21,467 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-19 17:03:21,467 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:03:21,467 INFO L791 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 174#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_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 175#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 176#L21 assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 182#L23 [2021-12-19 17:03:21,467 INFO L793 eck$LassoCheckResult]: Loop: 182#L23 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~z~0#1 := main_~z~0#1 - 1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 185#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 188#L21 assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 182#L23 [2021-12-19 17:03:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:21,467 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2021-12-19 17:03:21,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:21,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316931324] [2021-12-19 17:03:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:21,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,471 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,473 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash 50329, now seen corresponding path program 1 times [2021-12-19 17:03:21,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:21,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129125399] [2021-12-19 17:03:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:21,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,476 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,479 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724562, now seen corresponding path program 1 times [2021-12-19 17:03:21,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:21,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655863971] [2021-12-19 17:03:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:21,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,483 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:21,512 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:21,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:21,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:21,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:21,512 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:03:21,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,513 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:21,513 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:21,513 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration3_Loop [2021-12-19 17:03:21,513 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:21,513 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:21,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,568 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:21,568 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:03:21,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,569 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-19 17:03:21,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:21,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:21,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:21,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:21,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:21,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,653 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-19 17:03:21,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:03:21,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:21,707 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:03:21,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-19 17:03:21,710 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:21,710 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:21,710 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:21,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:21,710 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:03:21,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:21,711 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:21,711 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration3_Loop [2021-12-19 17:03:21,711 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:21,711 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:21,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,774 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:21,775 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:03:21,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,776 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-19 17:03:21,778 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:21,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:21,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:21,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:21,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:21,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:21,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:21,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:21,800 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:03:21,802 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:03:21,802 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:03:21,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:21,803 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:21,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-19 17:03:21,805 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:03:21,805 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:03:21,805 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:03:21,805 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2021-12-19 17:03:21,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-19 17:03:21,828 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:03:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:21,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:21,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:21,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:21,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:21,868 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-19 17:03:21,868 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 39 transitions. cyclomatic complexity: 20 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:21,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 39 transitions. cyclomatic complexity: 20. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 55 states and 86 transitions. Complement of second has 7 states. [2021-12-19 17:03:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-12-19 17:03:21,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-19 17:03:21,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:21,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-19 17:03:21,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:21,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-19 17:03:21,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:21,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 86 transitions. [2021-12-19 17:03:21,884 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-12-19 17:03:21,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 50 states and 79 transitions. [2021-12-19 17:03:21,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-19 17:03:21,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-19 17:03:21,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 79 transitions. [2021-12-19 17:03:21,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:03:21,886 INFO L681 BuchiCegarLoop]: Abstraction has 50 states and 79 transitions. [2021-12-19 17:03:21,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 79 transitions. [2021-12-19 17:03:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-12-19 17:03:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 47 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 77 transitions. [2021-12-19 17:03:21,888 INFO L704 BuchiCegarLoop]: Abstraction has 48 states and 77 transitions. [2021-12-19 17:03:21,889 INFO L587 BuchiCegarLoop]: Abstraction has 48 states and 77 transitions. [2021-12-19 17:03:21,889 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:03:21,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 77 transitions. [2021-12-19 17:03:21,889 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-12-19 17:03:21,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:03:21,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:03:21,890 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-12-19 17:03:21,890 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:03:21,890 INFO L791 eck$LassoCheckResult]: Stem: 298#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 299#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_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 300#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 301#L21 assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 342#L23 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 316#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 315#L21 assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 310#L23 [2021-12-19 17:03:21,890 INFO L793 eck$LassoCheckResult]: Loop: 310#L23 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~z~0#1 := main_~z~0#1 - 1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 311#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 329#L21 assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 310#L23 [2021-12-19 17:03:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 2 times [2021-12-19 17:03:21,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:21,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138323531] [2021-12-19 17:03:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:21,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,895 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,898 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:21,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash 50329, now seen corresponding path program 2 times [2021-12-19 17:03:21,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:21,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006067388] [2021-12-19 17:03:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:21,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,902 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,904 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1551048982, now seen corresponding path program 1 times [2021-12-19 17:03:21,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:21,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449164716] [2021-12-19 17:03:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:21,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,910 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:21,918 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:21,944 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:21,944 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:21,944 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:21,944 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:21,944 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:03:21,945 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:21,945 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:21,945 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:21,945 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration4_Loop [2021-12-19 17:03:21,945 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:21,945 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:21,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:21,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,002 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:22,003 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:03:22,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,004 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-19 17:03:22,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:22,027 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=0} Honda state: {ULTIMATE.start_main_#t~nondet3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:22,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,044 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-19 17:03:22,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,046 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,057 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:22,057 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: [] [2021-12-19 17:03:22,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-19 17:03:22,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,074 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-19 17:03:22,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,096 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:22,096 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:22,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,113 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-19 17:03:22,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,126 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:22,126 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:22,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-19 17:03:22,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,143 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-19 17:03:22,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-19 17:03:22,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,174 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-19 17:03:22,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:03:22,176 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,233 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:03:22,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,237 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:22,237 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:22,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:22,237 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:22,237 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:03:22,237 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:22,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:22,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration4_Loop [2021-12-19 17:03:22,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:22,237 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:22,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,300 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:22,300 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:03:22,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,306 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-19 17:03:22,308 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:22,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:22,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:22,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:22,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:22,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:22,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:22,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:22,330 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:22,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,347 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-19 17:03:22,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:22,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:22,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:22,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:22,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:22,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:22,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:22,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:22,371 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:22,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-19 17:03:22,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,387 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-19 17:03:22,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:22,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:22,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:22,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:22,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:22,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:22,398 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:22,398 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:22,407 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:22,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-19 17:03:22,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,424 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-19 17:03:22,425 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:22,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:22,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:22,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:22,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:22,432 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:03:22,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:03:22,448 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:22,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-19 17:03:22,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,465 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-19 17:03:22,469 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:22,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:22,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:22,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:22,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:22,486 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:03:22,486 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:03:22,494 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:22,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,511 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-19 17:03:22,513 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:22,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:22,522 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:22,522 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:22,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:22,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:22,523 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:22,523 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:22,538 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:03:22,540 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:03:22,540 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:03:22,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,541 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,552 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:03:22,552 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:03:22,552 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:03:22,552 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2021-12-19 17:03:22,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-19 17:03:22,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,567 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:03:22,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:22,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:22,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:22,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:22,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:22,630 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-19 17:03:22,630 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 77 transitions. cyclomatic complexity: 40 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:22,650 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 77 transitions. cyclomatic complexity: 40. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 66 states and 103 transitions. Complement of second has 7 states. [2021-12-19 17:03:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-12-19 17:03:22,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-19 17:03:22,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:22,651 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:03:22,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:22,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:22,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:22,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:22,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:22,688 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-19 17:03:22,688 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 77 transitions. cyclomatic complexity: 40 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:22,702 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 77 transitions. cyclomatic complexity: 40. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 96 transitions. Complement of second has 7 states. [2021-12-19 17:03:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-12-19 17:03:22,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-19 17:03:22,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:22,703 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:03:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:22,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:22,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:22,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:22,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:22,741 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-19 17:03:22,741 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 77 transitions. cyclomatic complexity: 40 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:22,756 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 77 transitions. cyclomatic complexity: 40. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 89 states and 138 transitions. Complement of second has 9 states. [2021-12-19 17:03:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-19 17:03:22,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-19 17:03:22,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:22,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-19 17:03:22,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:22,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-19 17:03:22,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:22,759 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 138 transitions. [2021-12-19 17:03:22,760 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-12-19 17:03:22,761 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 67 states and 104 transitions. [2021-12-19 17:03:22,761 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-12-19 17:03:22,761 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-19 17:03:22,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 104 transitions. [2021-12-19 17:03:22,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:03:22,761 INFO L681 BuchiCegarLoop]: Abstraction has 67 states and 104 transitions. [2021-12-19 17:03:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 104 transitions. [2021-12-19 17:03:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 39. [2021-12-19 17:03:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 62 transitions. [2021-12-19 17:03:22,763 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 62 transitions. [2021-12-19 17:03:22,763 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 62 transitions. [2021-12-19 17:03:22,763 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 17:03:22,763 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 62 transitions. [2021-12-19 17:03:22,764 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-19 17:03:22,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:03:22,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:03:22,764 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-19 17:03:22,764 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-19 17:03:22,764 INFO L791 eck$LassoCheckResult]: Stem: 699#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 700#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_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 711#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 719#L21 assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 708#L23 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~z~0#1 := main_~z~0#1 - 1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 709#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 734#L21 assume 0 != main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_~x~0#1 - 1; 701#L23-2 [2021-12-19 17:03:22,764 INFO L793 eck$LassoCheckResult]: Loop: 701#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 702#L21 assume 0 != main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_~x~0#1 - 1; 701#L23-2 [2021-12-19 17:03:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724560, now seen corresponding path program 1 times [2021-12-19 17:03:22,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:22,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656384307] [2021-12-19 17:03:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:22,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:22,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:22,771 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:22,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2021-12-19 17:03:22,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:22,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081229031] [2021-12-19 17:03:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:22,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:22,774 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:22,775 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:22,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash 644547635, now seen corresponding path program 2 times [2021-12-19 17:03:22,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:22,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495500687] [2021-12-19 17:03:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:22,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:22,779 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:22,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:22,812 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:22,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:22,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:22,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:22,812 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:03:22,812 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,812 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:22,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:22,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration5_Loop [2021-12-19 17:03:22,812 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:22,812 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:22,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:22,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,876 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:22,876 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:03:22,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,878 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-19 17:03:22,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,890 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:22,890 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: [] [2021-12-19 17:03:22,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-19 17:03:22,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,909 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-19 17:03:22,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,932 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:22,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:22,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:22,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,949 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-19 17:03:22,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:22,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:22,975 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:22,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-19 17:03:22,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:22,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:22,991 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:22,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-19 17:03:22,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:22,993 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:23,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-12-19 17:03:23,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,015 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-19 17:03:23,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:03:23,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:23,050 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:03:23,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-12-19 17:03:23,053 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:23,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:23,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:23,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:23,053 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:03:23,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:23,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:23,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration5_Loop [2021-12-19 17:03:23,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:23,054 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:23,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,123 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:23,123 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:03:23,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,125 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-19 17:03:23,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:23,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:23,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:23,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:23,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:23,134 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:03:23,134 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:03:23,136 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:23,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:23,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,152 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-19 17:03:23,154 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:23,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:23,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:23,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:23,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:23,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:23,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:23,162 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:23,163 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:23,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-12-19 17:03:23,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,181 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-19 17:03:23,182 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:23,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:23,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:23,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:23,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:23,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:23,189 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:23,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:23,190 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:03:23,193 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:03:23,193 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:03:23,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,194 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-19 17:03:23,196 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:03:23,196 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:03:23,196 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:03:23,196 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-19 17:03:23,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-12-19 17:03:23,212 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:03:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:23,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:23,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:23,243 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:23,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:23,253 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:03:23,253 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 62 transitions. cyclomatic complexity: 30 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,261 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 62 transitions. cyclomatic complexity: 30. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 154 transitions. Complement of second has 5 states. [2021-12-19 17:03:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-12-19 17:03:23,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-19 17:03:23,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:23,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-19 17:03:23,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:23,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-19 17:03:23,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:23,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 154 transitions. [2021-12-19 17:03:23,263 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-19 17:03:23,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 83 states and 130 transitions. [2021-12-19 17:03:23,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-19 17:03:23,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-19 17:03:23,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 130 transitions. [2021-12-19 17:03:23,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:03:23,264 INFO L681 BuchiCegarLoop]: Abstraction has 83 states and 130 transitions. [2021-12-19 17:03:23,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 130 transitions. [2021-12-19 17:03:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2021-12-19 17:03:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.6) internal successors, (112), 69 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 112 transitions. [2021-12-19 17:03:23,267 INFO L704 BuchiCegarLoop]: Abstraction has 70 states and 112 transitions. [2021-12-19 17:03:23,267 INFO L587 BuchiCegarLoop]: Abstraction has 70 states and 112 transitions. [2021-12-19 17:03:23,267 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 17:03:23,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 112 transitions. [2021-12-19 17:03:23,268 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-19 17:03:23,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:03:23,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:03:23,268 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1] [2021-12-19 17:03:23,268 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-19 17:03:23,268 INFO L791 eck$LassoCheckResult]: Stem: 887#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 888#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_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 901#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 931#L21 assume 0 != main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_~x~0#1 - 1; 948#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 891#L21 assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 902#L23 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~z~0#1 := main_~z~0#1 - 1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 924#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 919#L21 assume 0 != main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_~x~0#1 - 1; 912#L23-2 [2021-12-19 17:03:23,268 INFO L793 eck$LassoCheckResult]: Loop: 912#L23-2 assume !!((main_~x~0#1 > 0 && main_~y~0#1 > 0) && main_~z~0#1 > 0); 911#L21 assume 0 != main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_~x~0#1 - 1; 912#L23-2 [2021-12-19 17:03:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash 578209805, now seen corresponding path program 3 times [2021-12-19 17:03:23,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:23,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40467090] [2021-12-19 17:03:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:23,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:23,273 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:23,277 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:23,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 3 times [2021-12-19 17:03:23,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:23,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713629320] [2021-12-19 17:03:23,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:23,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:23,279 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:23,280 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:23,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:23,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1608841776, now seen corresponding path program 4 times [2021-12-19 17:03:23,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:03:23,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630400537] [2021-12-19 17:03:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:03:23,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:03:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:23,287 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:03:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:03:23,290 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:03:23,307 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:23,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:23,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:23,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:23,307 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:03:23,307 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,307 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:23,307 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:23,307 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration6_Loop [2021-12-19 17:03:23,307 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:23,307 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:23,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,348 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:23,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:03:23,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,372 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-19 17:03:23,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:23,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:23,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:23,399 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: [] [2021-12-19 17:03:23,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-12-19 17:03:23,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,419 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-19 17:03:23,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:23,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:23,432 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:23,432 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:23,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:23,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,477 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-19 17:03:23,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:23,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:23,490 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:03:23,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:03:23,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-12-19 17:03:23,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,508 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-19 17:03:23,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:03:23,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:23,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-12-19 17:03:23,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,533 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-19 17:03:23,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:03:23,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:03:23,560 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:03:23,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-12-19 17:03:23,563 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:03:23,563 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:03:23,563 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:03:23,563 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:03:23,563 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:03:23,563 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,563 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:03:23,563 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:03:23,563 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration6_Loop [2021-12-19 17:03:23,563 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:03:23,563 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:03:23,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:03:23,613 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:03:23,614 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:03:23,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,615 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-12-19 17:03:23,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:23,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:23,622 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:23,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:23,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:23,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:23,623 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:23,623 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:23,624 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:23,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-12-19 17:03:23,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,640 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-12-19 17:03:23,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:23,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:23,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:23,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:23,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:23,648 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:03:23,649 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:03:23,651 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:03:23,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:23,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,667 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-12-19 17:03:23,670 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:03:23,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:03:23,676 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:03:23,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:03:23,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:03:23,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:03:23,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:03:23,676 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:03:23,691 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:03:23,692 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-19 17:03:23,692 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:03:23,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:03:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:03:23,708 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:03:23,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-12-19 17:03:23,710 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:03:23,710 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:03:23,710 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:03:23,710 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-19 17:03:23,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:23,739 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:03:23,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:23,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:23,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:23,766 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:23,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:23,777 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:03:23,777 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 112 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,787 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 112 transitions. cyclomatic complexity: 56. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 110 states and 165 transitions. Complement of second has 5 states. [2021-12-19 17:03:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-12-19 17:03:23,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-19 17:03:23,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:23,788 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:03:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:23,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:23,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:23,814 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:23,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:23,823 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 [2021-12-19 17:03:23,823 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 112 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 112 transitions. cyclomatic complexity: 56. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 110 states and 165 transitions. Complement of second has 5 states. [2021-12-19 17:03:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-12-19 17:03:23,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-19 17:03:23,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:23,830 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:03:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:03:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:23,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:03:23,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:03:23,857 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:03:23,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:03:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:03:23,866 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 [2021-12-19 17:03:23,866 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 112 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,873 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 112 transitions. cyclomatic complexity: 56. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 126 states and 193 transitions. Complement of second has 4 states. [2021-12-19 17:03:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:03:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:03:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-12-19 17:03:23,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-19 17:03:23,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:23,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 11 letters. Loop has 2 letters. [2021-12-19 17:03:23,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:23,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-19 17:03:23,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:03:23,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 193 transitions. [2021-12-19 17:03:23,875 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:03:23,875 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 0 states and 0 transitions. [2021-12-19 17:03:23,875 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 17:03:23,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 17:03:23,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 17:03:23,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:03:23,875 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:03:23,875 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:03:23,875 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:03:23,875 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-19 17:03:23,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-19 17:03:23,875 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:03:23,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-19 17:03:23,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:03:23 BoogieIcfgContainer [2021-12-19 17:03:23,895 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:03:23,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:03:23,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:03:23,896 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:03:23,896 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:03:19" (3/4) ... [2021-12-19 17:03:23,898 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 17:03:23,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:03:23,898 INFO L158 Benchmark]: Toolchain (without parser) took 4771.90ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 73.1MB in the beginning and 49.3MB in the end (delta: 23.8MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. [2021-12-19 17:03:23,898 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory was 36.0MB in the beginning and 36.0MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:03:23,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.77ms. Allocated memory is still 104.9MB. Free memory was 72.9MB in the beginning and 81.6MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:03:23,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.49ms. Allocated memory is still 104.9MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:03:23,899 INFO L158 Benchmark]: Boogie Preprocessor took 18.43ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 79.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:03:23,899 INFO L158 Benchmark]: RCFGBuilder took 169.20ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 70.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:03:23,899 INFO L158 Benchmark]: BuchiAutomizer took 4396.78ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 70.6MB in the beginning and 49.3MB in the end (delta: 21.3MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2021-12-19 17:03:23,899 INFO L158 Benchmark]: Witness Printer took 2.08ms. Allocated memory is still 138.4MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:03:23,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory was 36.0MB in the beginning and 36.0MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.77ms. Allocated memory is still 104.9MB. Free memory was 72.9MB in the beginning and 81.6MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.49ms. Allocated memory is still 104.9MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.43ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 79.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 169.20ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 70.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4396.78ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 70.6MB in the beginning and 49.3MB in the end (delta: 21.3MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Witness Printer took 2.08ms. Allocated memory is still 138.4MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function z and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 3.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 70 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 93 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 126 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 91 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax153 hnf100 lsp29 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-19 17:03:23,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:24,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-12-19 17:03:24,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE