./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer --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 e09e2fe0d9f978fd259d1d805e514754ab2def67 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:30:11,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:30:11,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:30:11,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:30:11,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:30:11,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:30:11,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:30:11,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:30:11,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:30:11,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:30:11,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:30:11,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:30:11,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:30:11,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:30:11,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:30:11,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:30:11,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:30:11,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:30:11,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:30:11,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:30:11,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:30:11,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:30:11,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:30:11,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:30:11,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:30:11,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:30:11,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:30:11,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:30:11,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:30:11,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:30:11,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:30:11,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:30:11,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:30:11,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:30:11,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:30:11,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:30:11,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:30:11,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:30:11,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:30:11,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:30:11,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:30:11,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:30:11,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:30:11,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:30:11,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:30:11,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:30:11,488 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:30:11,488 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:30:11,488 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:30:11,488 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:30:11,488 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:30:11,489 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:30:11,490 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:30:11,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:30:11,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:30:11,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:30:11,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:30:11,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:30:11,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:30:11,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:30:11,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:30:11,492 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:30:11,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:30:11,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:30:11,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:30:11,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:30:11,493 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:30:11,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:30:11,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:30:11,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:30:11,494 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:30:11,495 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:30:11,495 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:/tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e09e2fe0d9f978fd259d1d805e514754ab2def67 [2020-11-29 19:30:11,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:30:11,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:30:11,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:30:11,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:30:11,771 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:30:11,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2020-11-29 19:30:11,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/data/f238fb258/517ae7382c004749b14919b540374773/FLAG5ff010f3f [2020-11-29 19:30:12,419 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:30:12,420 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2020-11-29 19:30:12,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/data/f238fb258/517ae7382c004749b14919b540374773/FLAG5ff010f3f [2020-11-29 19:30:12,788 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/data/f238fb258/517ae7382c004749b14919b540374773 [2020-11-29 19:30:12,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:30:12,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:30:12,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:30:12,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:30:12,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:30:12,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:30:12" (1/1) ... [2020-11-29 19:30:12,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@964d249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:12, skipping insertion in model container [2020-11-29 19:30:12,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:30:12" (1/1) ... [2020-11-29 19:30:12,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:30:12,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:30:12,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:30:12,999 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:30:13,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:30:13,058 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:30:13,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13 WrapperNode [2020-11-29 19:30:13,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:30:13,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:30:13,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:30:13,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:30:13,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:30:13,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:30:13,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:30:13,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:30:13,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... [2020-11-29 19:30:13,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:30:13,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:30:13,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:30:13,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:30:13,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:30:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:30:13,419 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:30:13,420 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 19:30:13,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:30:13 BoogieIcfgContainer [2020-11-29 19:30:13,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:30:13,423 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:30:13,423 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:30:13,427 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:30:13,428 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:30:13,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:30:12" (1/3) ... [2020-11-29 19:30:13,430 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3918fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:30:13, skipping insertion in model container [2020-11-29 19:30:13,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:30:13,431 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:30:13" (2/3) ... [2020-11-29 19:30:13,431 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3918fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:30:13, skipping insertion in model container [2020-11-29 19:30:13,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:30:13,432 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:30:13" (3/3) ... [2020-11-29 19:30:13,433 INFO L373 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2020-11-29 19:30:13,501 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:30:13,501 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:30:13,501 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:30:13,502 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:30:13,502 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:30:13,502 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:30:13,502 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:30:13,502 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:30:13,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 19:30:13,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:30:13,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:30:13,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:30:13,540 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:30:13,540 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:30:13,540 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:30:13,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 19:30:13,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:30:13,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:30:13,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:30:13,543 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:30:13,543 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:30:13,551 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2020-11-29 19:30:13,551 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 7#L18true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L18-2true [2020-11-29 19:30:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:13,559 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 19:30:13,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:13,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778313570] [2020-11-29 19:30:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:13,661 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:13,674 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:13,695 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:13,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-29 19:30:13,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:13,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180868544] [2020-11-29 19:30:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:13,726 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:13,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:13,743 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:13,756 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-29 19:30:13,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:13,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354614643] [2020-11-29 19:30:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:13,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:13,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:13,782 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:13,927 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 19:30:14,017 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:30:14,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:30:14,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:30:14,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:30:14,018 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:30:14,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:30:14,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:30:14,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2020-11-29 19:30:14,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:30:14,019 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:30:14,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,285 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:30:14,285 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:14,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:14,296 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:30:14,308 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:14,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:14,364 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:30:14,368 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:14,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:14,415 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,421 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:30:14,422 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:14,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:14,477 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:30:14,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:30:14,564 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:30:14,566 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:30:14,566 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:30:14,566 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:30:14,566 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:30:14,567 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:30:14,567 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,567 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:30:14,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:30:14,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2020-11-29 19:30:14,567 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:30:14,568 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:30:14,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:14,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:30:14,738 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,742 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:14,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:14,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:14,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:30:14,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:14,752 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:30:14,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:30:14,772 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:14,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:14,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:14,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:30:14,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:14,815 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:30:14,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:30:14,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:14,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:14,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:30:14,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:14,860 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 19:30:14,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:14,862 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 19:30:14,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:30:14,867 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,899 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:14,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:14,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:30:14,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:14,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:30:14,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:14,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:30:14,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:30:14,908 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:30:14,913 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:30:14,914 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:14,920 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:30:14,921 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:30:14,921 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:30:14,921 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:14,944 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:30:14,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:15,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:30:15,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:15,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:30:15,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:30:15,060 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 [2020-11-29 19:30:15,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-11-29 19:30:15,133 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 7 states. [2020-11-29 19:30:15,138 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 [2020-11-29 19:30:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:30:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-11-29 19:30:15,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-29 19:30:15,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:15,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 19:30:15,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:15,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 19:30:15,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:15,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-29 19:30:15,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:30:15,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2020-11-29 19:30:15,165 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 19:30:15,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 19:30:15,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-29 19:30:15,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:30:15,167 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 19:30:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-29 19:30:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 19:30:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 19:30:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-29 19:30:15,196 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 19:30:15,196 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 19:30:15,196 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:30:15,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-29 19:30:15,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:30:15,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:30:15,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:30:15,200 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:30:15,200 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:30:15,201 INFO L794 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 72#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2020-11-29 19:30:15,201 INFO L796 eck$LassoCheckResult]: Loop: 74#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 73#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2020-11-29 19:30:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 19:30:15,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:15,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281758274] [2020-11-29 19:30:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:15,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:15,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:15,223 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:15,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-11-29 19:30:15,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:15,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107599150] [2020-11-29 19:30:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:15,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:15,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:15,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:15,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:15,261 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-11-29 19:30:15,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:15,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215520864] [2020-11-29 19:30:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:15,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:15,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:15,284 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:15,307 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:30:15,308 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:30:15,308 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:30:15,308 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:30:15,308 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:30:15,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:30:15,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:30:15,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2020-11-29 19:30:15,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:30:15,309 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:30:15,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,414 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:30:15,414 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:15,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:15,448 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,453 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:30:15,454 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:15,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:15,500 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,504 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:30:15,505 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:15,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:15,551 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,555 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:30:15,555 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:15,596 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:30:15,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:30:15,727 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:30:15,730 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:30:15,730 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:30:15,730 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:30:15,730 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:30:15,730 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:30:15,730 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,730 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:30:15,730 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:30:15,731 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2020-11-29 19:30:15,731 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:30:15,731 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:30:15,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:15,884 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:30:15,885 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,902 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:15,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:15,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:15,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:30:15,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:15,912 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:30:15,914 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:30:15,921 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:15,969 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:15,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:15,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:15,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:30:15,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:15,982 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:30:15,982 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:15,988 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,021 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:16,023 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:16,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:30:16,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:16,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:30:16,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:16,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:30:16,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:30:16,025 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:16,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:16,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:30:16,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:16,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:30:16,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:16,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:30:16,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:30:16,071 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:30:16,073 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 19:30:16,074 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:16,077 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:30:16,077 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:30:16,077 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:30:16,077 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,112 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:30:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:16,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:30:16,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:16,196 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:30:16,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:30:16,237 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 [2020-11-29 19:30:16,237 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 19:30:16,264 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2020-11-29 19:30:16,266 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 [2020-11-29 19:30:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:30:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 19:30:16,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 19:30:16,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:16,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 19:30:16,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:16,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 19:30:16,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:16,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2020-11-29 19:30:16,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:30:16,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2020-11-29 19:30:16,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 19:30:16,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 19:30:16,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2020-11-29 19:30:16,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:30:16,270 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-11-29 19:30:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2020-11-29 19:30:16,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2020-11-29 19:30:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 19:30:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-29 19:30:16,271 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 19:30:16,272 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 19:30:16,272 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:30:16,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-29 19:30:16,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:30:16,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:30:16,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:30:16,273 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-11-29 19:30:16,273 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:30:16,273 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 125#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 126#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 131#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2020-11-29 19:30:16,273 INFO L796 eck$LassoCheckResult]: Loop: 129#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 130#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2020-11-29 19:30:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:16,274 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2020-11-29 19:30:16,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:16,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806334269] [2020-11-29 19:30:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:16,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:16,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:16,291 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:16,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2020-11-29 19:30:16,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:16,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639481321] [2020-11-29 19:30:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:16,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:16,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:16,311 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:16,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:16,311 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2020-11-29 19:30:16,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:30:16,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297864147] [2020-11-29 19:30:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:30:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:16,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:30:16,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:30:16,337 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:30:16,359 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:30:16,359 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:30:16,359 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:30:16,359 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:30:16,360 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:30:16,360 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:30:16,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:30:16,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2020-11-29 19:30:16,360 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:30:16,360 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:30:16,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,454 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:30:16,454 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:30:16,472 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:16,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:30:16,522 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,603 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:30:16,604 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:30:16,604 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:30:16,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:30:16,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:30:16,605 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:30:16,605 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,605 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:30:16,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:30:16,605 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2020-11-29 19:30:16,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:30:16,605 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:30:16,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:30:16,706 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:30:16,707 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:16,710 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:30:16,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:30:16,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:30:16,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:30:16,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:30:16,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:30:16,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:30:16,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,716 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:30:16,754 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:30:16,754 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4f70b854-955a-49b2-8ea7-9d4825568970/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:30:16,795 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:30:16,795 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:30:16,795 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:30:16,795 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:30:16,831 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:30:16,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:16,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:30:16,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:16,870 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:30:16,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:30:16,887 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 [2020-11-29 19:30:16,887 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 19:30:16,909 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2020-11-29 19:30:16,911 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 [2020-11-29 19:30:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:30:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 19:30:16,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 19:30:16,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:16,912 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:30:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:16,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:30:16,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:16,944 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:30:16,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:30:16,961 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 [2020-11-29 19:30:16,961 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 19:30:16,981 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2020-11-29 19:30:16,982 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 [2020-11-29 19:30:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:30:16,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 19:30:16,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 19:30:16,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:16,983 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:30:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:30:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:17,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:30:17,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:30:17,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:30:17,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:30:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:30:17,030 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 [2020-11-29 19:30:17,031 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 19:30:17,051 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2020-11-29 19:30:17,054 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 [2020-11-29 19:30:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:30:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 19:30:17,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 19:30:17,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:17,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 19:30:17,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:17,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-29 19:30:17,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:30:17,055 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2020-11-29 19:30:17,056 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:30:17,056 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-11-29 19:30:17,057 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:30:17,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:30:17,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:30:17,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:30:17,057 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:30:17,057 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:30:17,057 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:30:17,057 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:30:17,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:30:17,057 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:30:17,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:30:17,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:30:17 BoogieIcfgContainer [2020-11-29 19:30:17,067 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:30:17,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:30:17,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:30:17,069 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:30:17,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:30:13" (3/4) ... [2020-11-29 19:30:17,073 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:30:17,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:30:17,074 INFO L168 Benchmark]: Toolchain (without parser) took 4280.42 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 94.0 MB in the beginning and 96.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:17,075 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:30:17,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.10 ms. Allocated memory is still 119.5 MB. Free memory was 93.5 MB in the beginning and 98.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:17,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.51 ms. Allocated memory is still 119.5 MB. Free memory was 98.7 MB in the beginning and 97.7 MB in the end (delta: 959.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:30:17,076 INFO L168 Benchmark]: Boogie Preprocessor took 24.42 ms. Allocated memory is still 119.5 MB. Free memory was 97.7 MB in the beginning and 96.8 MB in the end (delta: 892.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:30:17,077 INFO L168 Benchmark]: RCFGBuilder took 289.81 ms. Allocated memory is still 119.5 MB. Free memory was 96.5 MB in the beginning and 88.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:17,078 INFO L168 Benchmark]: BuchiAutomizer took 3643.72 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 88.4 MB in the beginning and 96.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:17,078 INFO L168 Benchmark]: Witness Printer took 3.97 ms. Allocated memory is still 144.7 MB. Free memory is still 96.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:30:17,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.10 ms. Allocated memory is still 119.5 MB. Free memory was 93.5 MB in the beginning and 98.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.51 ms. Allocated memory is still 119.5 MB. Free memory was 98.7 MB in the beginning and 97.7 MB in the end (delta: 959.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.42 ms. Allocated memory is still 119.5 MB. Free memory was 97.7 MB in the beginning and 96.8 MB in the end (delta: 892.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 289.81 ms. Allocated memory is still 119.5 MB. Free memory was 96.5 MB in the beginning and 88.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3643.72 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 88.4 MB in the beginning and 96.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.97 ms. Allocated memory is still 144.7 MB. Free memory is still 96.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. 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 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 32 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...