./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg --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 fcb75d9c793adce3c2c2ca6d31453358360225b1f8596bb0dddfb529afd517e2 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:48:22,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:48:22,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:48:22,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:48:22,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:48:22,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:48:22,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:48:22,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:48:22,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:48:22,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:48:22,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:48:22,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:48:22,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:48:22,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:48:22,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:48:22,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:48:22,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:48:22,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:48:22,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:48:22,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:48:22,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:48:22,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:48:22,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:48:22,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:48:22,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:48:22,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:48:22,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:48:22,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:48:22,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:48:22,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:48:22,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:48:22,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:48:22,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:48:22,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:48:22,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:48:22,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:48:22,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:48:22,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:48:22,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:48:22,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:48:22,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:48:22,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:48:22,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:48:22,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:48:22,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:48:22,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:48:22,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:48:22,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:48:22,757 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:48:22,757 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:48:22,757 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:48:22,758 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:48:22,759 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:48:22,759 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:48:22,759 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:48:22,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:48:22,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:48:22,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:48:22,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:48:22,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:48:22,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:48:22,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:48:22,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:48:22,762 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:48:22,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:48:22,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:48:22,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:48:22,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:48:22,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:48:22,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:48:22,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:48:22,766 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:48:22,767 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_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcb75d9c793adce3c2c2ca6d31453358360225b1f8596bb0dddfb529afd517e2 [2021-10-28 09:48:23,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:48:23,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:48:23,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:48:23,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:48:23,109 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:48:23,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2021-10-28 09:48:23,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/data/628483fbf/039a3b78f0074d279345c85756f88cb6/FLAGf6a2db052 [2021-10-28 09:48:23,643 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:48:23,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2021-10-28 09:48:23,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/data/628483fbf/039a3b78f0074d279345c85756f88cb6/FLAGf6a2db052 [2021-10-28 09:48:24,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/data/628483fbf/039a3b78f0074d279345c85756f88cb6 [2021-10-28 09:48:24,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:48:24,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:48:24,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:24,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:48:24,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:48:24,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfdc4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24, skipping insertion in model container [2021-10-28 09:48:24,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:48:24,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:48:24,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:24,503 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:48:24,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:24,543 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:48:24,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24 WrapperNode [2021-10-28 09:48:24,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:24,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:24,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:48:24,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:48:24,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:24,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:48:24,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:48:24,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:48:24,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:48:24,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:48:24,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:48:24,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:48:24,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (1/1) ... [2021-10-28 09:48:24,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:24,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:24,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:24,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:48:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:48:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:48:24,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:48:24,913 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:48:24,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:24 BoogieIcfgContainer [2021-10-28 09:48:24,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:48:24,919 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:48:24,919 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:48:24,923 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:48:24,924 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:48:24,924 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:48:24" (1/3) ... [2021-10-28 09:48:24,926 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6551f842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:48:24, skipping insertion in model container [2021-10-28 09:48:24,926 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:48:24,926 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:24" (2/3) ... [2021-10-28 09:48:24,927 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6551f842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:48:24, skipping insertion in model container [2021-10-28 09:48:24,927 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:48:24,927 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:24" (3/3) ... [2021-10-28 09:48:24,929 INFO L389 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2021-10-28 09:48:25,011 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:48:25,012 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:48:25,012 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:48:25,012 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:48:25,012 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:48:25,013 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:48:25,013 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:48:25,013 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:48:25,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:25,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:48:25,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:25,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:25,068 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:48:25,069 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:25,069 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:48:25,069 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:25,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:48:25,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:25,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:25,072 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:48:25,072 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:25,079 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, 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; 9#L27-2true [2021-10-28 09:48:25,080 INFO L793 eck$LassoCheckResult]: Loop: 9#L27-2true assume !!(0 != main_~x~0 && main_~y~0 > 0); 7#L19true assume main_~x~0 > 0; 8#L20true 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; 9#L27-2true [2021-10-28 09:48:25,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 09:48:25,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:25,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767537847] [2021-10-28 09:48:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:25,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:25,197 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:25,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 1 times [2021-10-28 09:48:25,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:25,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543555167] [2021-10-28 09:48:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:25,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:25,257 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:25,276 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:25,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:25,279 INFO L85 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2021-10-28 09:48:25,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:25,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383944571] [2021-10-28 09:48:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:25,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:25,299 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:25,315 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:25,436 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:25,437 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:25,437 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:25,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:25,438 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:25,438 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:25,438 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:25,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:25,439 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2021-10-28 09:48:25,439 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:25,440 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:25,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:25,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:25,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:25,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:25,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:25,605 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:25,606 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:25,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:25,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:25,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:25,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:48:25,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:25,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:25,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:25,664 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:25,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:25,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:25,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:25,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:25,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:25,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:25,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:48:25,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:25,744 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:25,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:25,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:25,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:25,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:25,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:25,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:25,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:48:25,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:25,809 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=3, ULTIMATE.start_main_#t~nondet3=3} Honda state: {ULTIMATE.start_main_~y~0=3, ULTIMATE.start_main_#t~nondet3=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:25,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:25,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:25,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:25,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:25,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:48:25,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:25,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:25,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:25,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:25,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:25,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:25,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:25,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:25,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:48:25,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:25,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:25,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:25,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:25,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:25,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:25,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:48:25,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:25,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:26,009 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:26,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-28 09:48:26,018 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:26,018 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:26,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:26,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:26,019 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:26,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:26,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:26,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2021-10-28 09:48:26,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:26,019 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:26,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:26,111 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:26,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:26,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:26,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:48:26,140 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:26,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:26,150 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:26,150 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:26,150 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:26,163 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:26,163 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:26,184 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:26,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:26,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:26,222 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:26,244 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:26,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:26,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:26,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:26,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:26,263 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:26,263 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:26,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:48:26,288 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:26,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:26,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:26,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:26,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:48:26,320 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:26,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:26,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:26,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:26,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:26,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:26,332 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:26,332 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:26,360 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:26,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-28 09:48:26,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:26,384 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:26,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:48:26,389 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:26,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:26,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:26,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:26,397 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:48:26,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:26,400 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:48:26,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:26,420 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:26,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:26,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:26,460 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:26,467 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:26,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:48:26,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:26,475 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:26,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:26,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:26,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:26,477 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:26,477 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:26,480 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:26,488 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:48:26,488 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:26,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:26,490 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:26,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:48:26,495 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:26,495 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:26,495 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:26,495 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 09:48:26,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-10-28 09:48:26,523 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:26,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:26,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:26,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:26,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:26,614 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:26,615 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:26,681 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 64 transitions. Complement of second has 8 states. [2021-10-28 09:48:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2021-10-28 09:48:26,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-28 09:48:26,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:26,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 09:48:26,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:26,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-28 09:48:26,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:26,689 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2021-10-28 09:48:26,694 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:48:26,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 16 states and 24 transitions. [2021-10-28 09:48:26,698 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-28 09:48:26,699 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 09:48:26,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 24 transitions. [2021-10-28 09:48:26,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:26,700 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2021-10-28 09:48:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 24 transitions. [2021-10-28 09:48:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-10-28 09:48:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2021-10-28 09:48:26,724 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2021-10-28 09:48:26,724 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2021-10-28 09:48:26,724 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:48:26,724 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2021-10-28 09:48:26,725 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 09:48:26,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:26,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:26,726 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:48:26,726 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:26,726 INFO L791 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, 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; 95#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 106#L19 assume !(main_~x~0 > 0); 96#L27 [2021-10-28 09:48:26,726 INFO L793 eck$LassoCheckResult]: Loop: 96#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 97#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 105#L19 assume !(main_~x~0 > 0); 96#L27 [2021-10-28 09:48:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:26,727 INFO L85 PathProgramCache]: Analyzing trace with hash 31083, now seen corresponding path program 1 times [2021-10-28 09:48:26,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:26,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585097408] [2021-10-28 09:48:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:26,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:26,734 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:26,739 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:26,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash 53186, now seen corresponding path program 1 times [2021-10-28 09:48:26,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:26,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615539555] [2021-10-28 09:48:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:26,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:26,748 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:26,753 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash 926017048, now seen corresponding path program 1 times [2021-10-28 09:48:26,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:26,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072473607] [2021-10-28 09:48:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:26,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:26,766 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:26,772 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:26,840 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:26,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:26,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:26,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:26,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:26,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:26,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:26,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2021-10-28 09:48:26,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:26,842 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:26,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:26,945 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:26,945 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:26,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:26,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:26,947 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:26,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:26,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:26,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:48:26,989 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:26,989 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:27,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,023 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:27,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:27,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:48:27,060 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:27,060 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:27,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,100 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:27,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:27,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:48:27,140 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:27,140 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:27,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,178 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:27,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:27,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:48:27,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:27,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:27,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:48:27,406 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:27,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,413 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:27,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:27,413 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:27,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:27,414 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:27,414 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,414 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:27,414 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:27,414 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2021-10-28 09:48:27,414 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:27,415 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:27,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:27,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:27,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:27,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:27,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:27,516 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:27,516 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:27,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,520 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:27,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:27,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:27,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:27,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:27,544 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:27,544 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:27,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:48:27,564 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:27,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,624 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:27,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:27,654 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:27,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:27,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:27,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:27,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:27,666 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:27,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:48:27,680 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:27,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,723 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:27,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:27,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:27,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:27,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:27,763 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:27,763 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:27,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 09:48:27,772 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:27,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,813 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 09:48:27,816 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:27,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:27,826 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:27,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:27,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:27,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:27,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:27,828 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:27,840 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:27,844 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:48:27,844 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:27,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:27,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:27,847 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:27,848 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:27,848 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:27,848 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:27,849 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 09:48:27,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:48:27,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:27,888 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:27,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:27,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:27,923 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:27,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:27,964 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:27,964 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:28,002 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 10. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 50 transitions. Complement of second has 7 states. [2021-10-28 09:48:28,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-10-28 09:48:28,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-28 09:48:28,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:28,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-28 09:48:28,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:28,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-28 09:48:28,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:28,006 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 50 transitions. [2021-10-28 09:48:28,008 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2021-10-28 09:48:28,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 32 states and 50 transitions. [2021-10-28 09:48:28,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-10-28 09:48:28,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-10-28 09:48:28,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 50 transitions. [2021-10-28 09:48:28,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:28,011 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 50 transitions. [2021-10-28 09:48:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 50 transitions. [2021-10-28 09:48:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-28 09:48:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.6) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 48 transitions. [2021-10-28 09:48:28,016 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 48 transitions. [2021-10-28 09:48:28,016 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 48 transitions. [2021-10-28 09:48:28,016 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:48:28,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 48 transitions. [2021-10-28 09:48:28,018 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2021-10-28 09:48:28,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:28,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:28,019 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:48:28,019 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:28,019 INFO L791 eck$LassoCheckResult]: Stem: 182#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, 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; 183#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 200#L19 assume main_~x~0 > 0; 189#L20 [2021-10-28 09:48:28,019 INFO L793 eck$LassoCheckResult]: Loop: 189#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 195#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 188#L19 assume main_~x~0 > 0; 189#L20 [2021-10-28 09:48:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-10-28 09:48:28,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:28,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488657651] [2021-10-28 09:48:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:28,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,026 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,030 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:28,031 INFO L85 PathProgramCache]: Analyzing trace with hash 47412, now seen corresponding path program 1 times [2021-10-28 09:48:28,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:28,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329638876] [2021-10-28 09:48:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:28,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,038 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,042 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:28,043 INFO L85 PathProgramCache]: Analyzing trace with hash 925772946, now seen corresponding path program 1 times [2021-10-28 09:48:28,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:28,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233734243] [2021-10-28 09:48:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:28,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,050 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,056 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:28,087 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:28,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:28,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:28,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:28,088 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:28,088 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:28,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:28,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:28,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2021-10-28 09:48:28,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:28,089 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:28,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,152 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:28,152 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:28,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:28,156 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:28,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:28,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:28,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:48:28,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:28,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:28,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:28,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:28,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:28,279 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:28,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:48:28,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:28,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:28,360 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:28,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:28,363 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:28,363 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:28,363 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:28,363 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:28,364 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:28,364 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:28,364 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:28,364 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:28,364 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2021-10-28 09:48:28,364 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:28,364 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:28,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,459 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:28,459 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:28,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:28,460 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:28,469 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:28,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:28,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:28,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:28,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:28,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:28,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:28,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:28,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:48:28,496 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:28,500 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:48:28,501 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:28,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:28,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:28,502 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:28,504 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:28,504 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:28,505 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:28,505 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 09:48:28,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:48:28,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:28,548 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:28,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:28,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:28,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:28,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:28,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:28,656 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 09:48:28,656 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 48 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:28,706 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 48 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 96 states and 149 transitions. Complement of second has 7 states. [2021-10-28 09:48:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-28 09:48:28,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-28 09:48:28,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:28,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-28 09:48:28,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:28,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-28 09:48:28,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:28,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 96 states and 149 transitions. [2021-10-28 09:48:28,720 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2021-10-28 09:48:28,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 96 states to 83 states and 128 transitions. [2021-10-28 09:48:28,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 09:48:28,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 09:48:28,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 128 transitions. [2021-10-28 09:48:28,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:28,730 INFO L681 BuchiCegarLoop]: Abstraction has 83 states and 128 transitions. [2021-10-28 09:48:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 128 transitions. [2021-10-28 09:48:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2021-10-28 09:48:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 77 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 123 transitions. [2021-10-28 09:48:28,749 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 123 transitions. [2021-10-28 09:48:28,749 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 123 transitions. [2021-10-28 09:48:28,749 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:48:28,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 123 transitions. [2021-10-28 09:48:28,754 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2021-10-28 09:48:28,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:28,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:28,760 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:48:28,760 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:28,760 INFO L791 eck$LassoCheckResult]: Stem: 351#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, 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; 352#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 387#L19 assume !(main_~x~0 > 0); 386#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 382#L27-2 [2021-10-28 09:48:28,760 INFO L793 eck$LassoCheckResult]: Loop: 382#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 379#L19 assume !(main_~x~0 > 0); 380#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 382#L27-2 [2021-10-28 09:48:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash 963599, now seen corresponding path program 1 times [2021-10-28 09:48:28,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:28,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217641346] [2021-10-28 09:48:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:28,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,780 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,787 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 2 times [2021-10-28 09:48:28,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:28,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533300848] [2021-10-28 09:48:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:28,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,794 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,798 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1358182978, now seen corresponding path program 1 times [2021-10-28 09:48:28,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:28,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362644615] [2021-10-28 09:48:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:28,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,808 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:28,816 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:28,848 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:28,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:28,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:28,849 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:28,849 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:28,849 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:28,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:28,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:28,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2021-10-28 09:48:28,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:28,850 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:28,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:28,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:28,933 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:28,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:28,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:28,944 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:28,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:28,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:28,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:48:28,971 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:28,971 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=4} Honda state: {ULTIMATE.start_main_#t~nondet4=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:29,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:29,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,031 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:29,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:29,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:48:29,061 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:29,061 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:29,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-28 09:48:29,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,095 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:29,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:29,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:48:29,116 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:29,116 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:29,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:29,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,140 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:48:29,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:29,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:29,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:29,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,178 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:48:29,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:29,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:29,237 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:29,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-28 09:48:29,239 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:29,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:29,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:29,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:29,240 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:29,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:29,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:29,240 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2021-10-28 09:48:29,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:29,240 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:29,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,337 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:29,337 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:29,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,339 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,341 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:29,352 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:29,352 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:29,352 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:29,352 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:48:29,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:29,354 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:48:29,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:29,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:48:29,380 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:29,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-28 09:48:29,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,406 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:48:29,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:29,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:29,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:29,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:29,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:29,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:29,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:29,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:29,440 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:29,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:29,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,480 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:29,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:29,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:29,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:29,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:29,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:29,493 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:29,493 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:29,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:48:29,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:29,510 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:48:29,511 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:48:29,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,515 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:48:29,516 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:29,517 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:29,517 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:29,517 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 09:48:29,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:29,542 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:29,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:29,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:29,582 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:29,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:29,608 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:29,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 78 states and 123 transitions. cyclomatic complexity: 58 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:29,633 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 78 states and 123 transitions. cyclomatic complexity: 58. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 120 states and 193 transitions. Complement of second has 7 states. [2021-10-28 09:48:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-28 09:48:29,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 09:48:29,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:29,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 09:48:29,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:29,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-28 09:48:29,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:29,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 193 transitions. [2021-10-28 09:48:29,639 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 27 [2021-10-28 09:48:29,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 118 states and 188 transitions. [2021-10-28 09:48:29,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-28 09:48:29,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2021-10-28 09:48:29,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 188 transitions. [2021-10-28 09:48:29,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:29,643 INFO L681 BuchiCegarLoop]: Abstraction has 118 states and 188 transitions. [2021-10-28 09:48:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 188 transitions. [2021-10-28 09:48:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2021-10-28 09:48:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 114 states have (on average 1.587719298245614) internal successors, (181), 113 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 181 transitions. [2021-10-28 09:48:29,653 INFO L704 BuchiCegarLoop]: Abstraction has 114 states and 181 transitions. [2021-10-28 09:48:29,654 INFO L587 BuchiCegarLoop]: Abstraction has 114 states and 181 transitions. [2021-10-28 09:48:29,654 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:48:29,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 181 transitions. [2021-10-28 09:48:29,656 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 27 [2021-10-28 09:48:29,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:29,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:29,656 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2021-10-28 09:48:29,657 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:29,657 INFO L791 eck$LassoCheckResult]: Stem: 594#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, 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; 595#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 602#L19 assume main_~x~0 > 0; 603#L20 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; 669#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 667#L19 assume main_~x~0 > 0; 658#L20 [2021-10-28 09:48:29,657 INFO L793 eck$LassoCheckResult]: Loop: 658#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 659#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 671#L19 assume main_~x~0 > 0; 658#L20 [2021-10-28 09:48:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash 925771024, now seen corresponding path program 2 times [2021-10-28 09:48:29,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:29,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269787881] [2021-10-28 09:48:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:29,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:29,665 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:29,671 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 47412, now seen corresponding path program 2 times [2021-10-28 09:48:29,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:29,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080263674] [2021-10-28 09:48:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:29,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:29,678 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:29,683 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1659585989, now seen corresponding path program 1 times [2021-10-28 09:48:29,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:29,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782304349] [2021-10-28 09:48:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:29,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:29,691 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:29,698 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:29,725 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:29,725 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:29,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:29,726 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:29,726 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:29,726 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,726 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:29,726 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:29,726 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2021-10-28 09:48:29,726 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:29,727 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:29,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:29,791 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:29,791 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:29,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,805 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:29,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:29,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:48:29,840 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:29,841 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:29,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:29,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,878 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:29,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:48:29,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:29,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:29,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:29,945 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:29,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:29,947 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:29,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 09:48:30,080 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:30,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:30,087 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:30,087 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:30,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:30,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:30,088 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:30,088 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:30,088 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:30,088 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:30,088 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2021-10-28 09:48:30,088 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:30,088 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:30,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:30,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:30,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:30,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:30,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:30,198 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:30,198 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:30,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:30,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:30,212 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:30,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 09:48:30,244 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:30,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:30,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:30,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:30,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:30,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:30,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:30,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:30,276 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:30,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:30,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:30,360 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:30,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:30,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:30,392 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:30,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:30,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:30,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:30,394 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:30,394 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:30,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:48:30,401 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:30,405 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:48:30,405 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:30,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:30,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:30,407 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:30,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:48:30,408 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:30,408 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:30,408 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:30,409 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 09:48:30,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-28 09:48:30,438 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:30,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:30,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:30,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:30,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:30,548 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 09:48:30,548 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 114 states and 181 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:30,599 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 114 states and 181 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 196 states and 308 transitions. Complement of second has 7 states. [2021-10-28 09:48:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-28 09:48:30,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-28 09:48:30,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:30,601 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:48:30,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:30,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:30,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:30,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:30,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:30,708 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 09:48:30,708 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 114 states and 181 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:30,746 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 114 states and 181 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 180 states and 279 transitions. Complement of second has 7 states. [2021-10-28 09:48:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-10-28 09:48:30,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-28 09:48:30,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:30,748 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:48:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:30,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:30,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:30,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:30,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:30,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:30,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:30,879 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 09:48:30,879 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 114 states and 181 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:30,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:30,914 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 114 states and 181 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 312 states and 485 transitions. Complement of second has 9 states. [2021-10-28 09:48:30,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-10-28 09:48:30,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-28 09:48:30,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:30,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 3 letters. [2021-10-28 09:48:30,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:30,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 6 letters. [2021-10-28 09:48:30,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:30,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 312 states and 485 transitions. [2021-10-28 09:48:30,925 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 62 [2021-10-28 09:48:30,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 312 states to 222 states and 343 transitions. [2021-10-28 09:48:30,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2021-10-28 09:48:30,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-10-28 09:48:30,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 222 states and 343 transitions. [2021-10-28 09:48:30,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:30,930 INFO L681 BuchiCegarLoop]: Abstraction has 222 states and 343 transitions. [2021-10-28 09:48:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states and 343 transitions. [2021-10-28 09:48:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 122. [2021-10-28 09:48:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 122 states have (on average 1.6229508196721312) internal successors, (198), 121 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 198 transitions. [2021-10-28 09:48:30,943 INFO L704 BuchiCegarLoop]: Abstraction has 122 states and 198 transitions. [2021-10-28 09:48:30,943 INFO L587 BuchiCegarLoop]: Abstraction has 122 states and 198 transitions. [2021-10-28 09:48:30,943 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:48:30,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 122 states and 198 transitions. [2021-10-28 09:48:30,945 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 48 [2021-10-28 09:48:30,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:30,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:30,946 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:48:30,946 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2021-10-28 09:48:30,946 INFO L791 eck$LassoCheckResult]: Stem: 1524#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, 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; 1525#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 1611#L19 assume !(main_~x~0 > 0); 1595#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 1587#L27-2 [2021-10-28 09:48:30,947 INFO L793 eck$LassoCheckResult]: Loop: 1587#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 1627#L19 assume main_~x~0 > 0; 1626#L20 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; 1571#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 1569#L19 assume !(main_~x~0 > 0); 1570#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 1587#L27-2 [2021-10-28 09:48:30,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 2 times [2021-10-28 09:48:30,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:30,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63397100] [2021-10-28 09:48:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:30,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:30,954 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:30,959 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:30,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1186287905, now seen corresponding path program 1 times [2021-10-28 09:48:30,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:30,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929702256] [2021-10-28 09:48:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:30,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:31,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:31,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929702256] [2021-10-28 09:48:31,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929702256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:31,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:31,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:48:31,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604179546] [2021-10-28 09:48:31,032 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:48:31,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:48:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:48:31,039 INFO L87 Difference]: Start difference. First operand 122 states and 198 transitions. cyclomatic complexity: 88 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:31,065 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2021-10-28 09:48:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:48:31,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 95 transitions. [2021-10-28 09:48:31,068 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2021-10-28 09:48:31,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 47 states and 66 transitions. [2021-10-28 09:48:31,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-28 09:48:31,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-10-28 09:48:31,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 66 transitions. [2021-10-28 09:48:31,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:31,070 INFO L681 BuchiCegarLoop]: Abstraction has 47 states and 66 transitions. [2021-10-28 09:48:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 66 transitions. [2021-10-28 09:48:31,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 23. [2021-10-28 09:48:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-10-28 09:48:31,078 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-28 09:48:31,078 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-28 09:48:31,079 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:48:31,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 34 transitions. [2021-10-28 09:48:31,079 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-10-28 09:48:31,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:31,080 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:31,080 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:48:31,080 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:31,081 INFO L791 eck$LassoCheckResult]: Stem: 1722#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1723#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 1742#L19 assume !(main_~x~0 > 0); 1741#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 1733#L27-2 [2021-10-28 09:48:31,081 INFO L793 eck$LassoCheckResult]: Loop: 1733#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 1728#L19 assume main_~x~0 > 0; 1729#L20 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; 1733#L27-2 [2021-10-28 09:48:31,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:31,082 INFO L85 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 3 times [2021-10-28 09:48:31,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:31,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497792052] [2021-10-28 09:48:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:31,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,108 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,113 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 2 times [2021-10-28 09:48:31,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:31,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238610962] [2021-10-28 09:48:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:31,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,118 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,122 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1358242816, now seen corresponding path program 1 times [2021-10-28 09:48:31,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:31,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117052396] [2021-10-28 09:48:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:31,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:31,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:31,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117052396] [2021-10-28 09:48:31,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117052396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:31,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249250201] [2021-10-28 09:48:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:31,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:31,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:31,192 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:48:31,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-28 09:48:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:31,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:31,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:31,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249250201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:31,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:48:31,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:48:31,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197178757] [2021-10-28 09:48:31,330 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:31,330 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:31,330 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:31,330 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:31,330 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:31,330 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:31,331 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:31,331 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:31,331 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration7_Loop [2021-10-28 09:48:31,331 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:31,331 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:31,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,413 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:31,413 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:31,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:31,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:31,416 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:31,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:31,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:31,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 09:48:31,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:31,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:31,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:31,488 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:31,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:31,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:31,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 09:48:31,580 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:31,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:31,584 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:31,584 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:31,584 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:31,585 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:31,585 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:31,585 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:31,585 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:31,585 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:31,585 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration7_Loop [2021-10-28 09:48:31,585 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:31,585 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:31,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:31,663 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:31,663 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:31,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:31,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:31,665 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:31,673 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:31,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:31,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:31,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:31,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:31,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:31,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:31,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:31,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 09:48:31,700 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:31,704 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:48:31,705 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:31,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:31,706 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:31,709 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:31,710 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:31,710 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:31,710 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 09:48:31,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 09:48:31,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:31,752 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:31,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:31,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:31,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:31,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:31,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:31,830 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:31,831 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 34 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:31,861 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 34 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 71 states and 100 transitions. Complement of second has 7 states. [2021-10-28 09:48:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-28 09:48:31,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 09:48:31,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:31,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 09:48:31,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:31,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-28 09:48:31,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:31,865 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2021-10-28 09:48:31,867 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 20 [2021-10-28 09:48:31,868 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 49 states and 69 transitions. [2021-10-28 09:48:31,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-28 09:48:31,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 09:48:31,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 69 transitions. [2021-10-28 09:48:31,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:31,869 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 69 transitions. [2021-10-28 09:48:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 69 transitions. [2021-10-28 09:48:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2021-10-28 09:48:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2021-10-28 09:48:31,873 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2021-10-28 09:48:31,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:48:31,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:48:31,874 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:31,902 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2021-10-28 09:48:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:48:31,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 55 transitions. [2021-10-28 09:48:31,904 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-10-28 09:48:31,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 39 states and 53 transitions. [2021-10-28 09:48:31,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-28 09:48:31,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-10-28 09:48:31,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 53 transitions. [2021-10-28 09:48:31,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:31,905 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-10-28 09:48:31,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 53 transitions. [2021-10-28 09:48:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2021-10-28 09:48:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2021-10-28 09:48:31,909 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-10-28 09:48:31,909 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-10-28 09:48:31,909 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:48:31,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 35 transitions. [2021-10-28 09:48:31,910 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-28 09:48:31,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:31,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:31,911 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-10-28 09:48:31,911 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:31,911 INFO L791 eck$LassoCheckResult]: Stem: 1958#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1959#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 1977#L19 assume !(main_~x~0 > 0); 1974#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 1976#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 1978#L19 assume main_~x~0 > 0; 1972#L20 [2021-10-28 09:48:31,911 INFO L793 eck$LassoCheckResult]: Loop: 1972#L20 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; 1967#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 1973#L19 assume main_~x~0 > 0; 1972#L20 [2021-10-28 09:48:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash 926018962, now seen corresponding path program 1 times [2021-10-28 09:48:31,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:31,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984274069] [2021-10-28 09:48:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:31,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,919 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,924 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:31,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:31,925 INFO L85 PathProgramCache]: Analyzing trace with hash 45490, now seen corresponding path program 3 times [2021-10-28 09:48:31,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:31,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704921310] [2021-10-28 09:48:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:31,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,931 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,935 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash 455970433, now seen corresponding path program 1 times [2021-10-28 09:48:31,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:31,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104263684] [2021-10-28 09:48:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:31,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,945 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:31,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:31,995 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:31,995 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:31,995 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:31,995 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:31,995 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:31,996 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:31,996 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:31,996 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:31,996 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration8_Loop [2021-10-28 09:48:31,996 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:31,996 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:31,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,087 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:32,087 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:32,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,104 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 09:48:32,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:32,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:32,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:32,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=3, ULTIMATE.start_main_#t~nondet3=3} Honda state: {ULTIMATE.start_main_~y~0=3, ULTIMATE.start_main_#t~nondet3=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:32,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:32,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,192 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:32,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:32,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 09:48:32,226 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:32,226 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:32,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:32,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,266 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:32,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:32,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 09:48:32,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:32,308 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:32,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-10-28 09:48:32,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,342 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 09:48:32,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:32,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:32,360 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:32,361 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:32,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-28 09:48:32,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,386 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 09:48:32,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:32,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:32,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-10-28 09:48:32,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,434 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 09:48:32,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:32,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:32,535 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:32,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-10-28 09:48:32,538 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:32,538 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:32,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:32,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:32,539 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:32,539 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,539 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:32,539 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:32,539 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration8_Loop [2021-10-28 09:48:32,539 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:32,539 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:32,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:32,632 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:32,632 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:32,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,640 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:32,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:32,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:32,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:32,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:32,661 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:32,662 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:32,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 09:48:32,683 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:32,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:32,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,705 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 09:48:32,707 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:32,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:32,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:32,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:32,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:32,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:32,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:32,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:32,720 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:32,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-28 09:48:32,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,742 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 09:48:32,743 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:32,751 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:32,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:32,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:32,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:32,753 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:32,753 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:32,788 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:32,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:32,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,826 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 09:48:32,828 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:32,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:32,836 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:32,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:32,837 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:48:32,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:32,837 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:48:32,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:32,840 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:32,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-28 09:48:32,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,878 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:32,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 09:48:32,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:32,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:32,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:32,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:32,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:32,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:32,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:32,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:32,937 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:32,940 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:48:32,940 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:48:32,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:32,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:32,944 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:32,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 09:48:32,945 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:32,945 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:32,945 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:32,945 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 09:48:32,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:32,969 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:32,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:32,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:33,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:33,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:33,040 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:33,040 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:33,065 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 49 transitions. Complement of second has 6 states. [2021-10-28 09:48:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-28 09:48:33,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-28 09:48:33,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:33,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 3 letters. [2021-10-28 09:48:33,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:33,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 6 letters. [2021-10-28 09:48:33,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:33,068 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 49 transitions. [2021-10-28 09:48:33,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:48:33,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 24 transitions. [2021-10-28 09:48:33,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-28 09:48:33,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-28 09:48:33,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2021-10-28 09:48:33,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:33,070 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-28 09:48:33,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2021-10-28 09:48:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-10-28 09:48:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-10-28 09:48:33,073 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-10-28 09:48:33,073 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-10-28 09:48:33,073 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:48:33,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2021-10-28 09:48:33,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:33,074 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:33,074 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:33,074 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1] [2021-10-28 09:48:33,074 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:33,075 INFO L791 eck$LassoCheckResult]: Stem: 2069#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 2070#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 2082#L19 assume !(main_~x~0 > 0); 2080#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 2081#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 2083#L19 assume !(main_~x~0 > 0); 2071#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 2072#L27-2 [2021-10-28 09:48:33,075 INFO L793 eck$LassoCheckResult]: Loop: 2072#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 2075#L19 assume !(main_~x~0 > 0); 2076#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 2072#L27-2 [2021-10-28 09:48:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1358182976, now seen corresponding path program 2 times [2021-10-28 09:48:33,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:33,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239790950] [2021-10-28 09:48:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:33,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:33,083 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:33,089 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 3 times [2021-10-28 09:48:33,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:33,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754753302] [2021-10-28 09:48:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:33,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:33,094 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:33,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:33,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1257867885, now seen corresponding path program 2 times [2021-10-28 09:48:33,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:33,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292344435] [2021-10-28 09:48:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:33,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:33,106 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:33,113 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:33,150 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:33,150 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:33,150 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:33,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:33,151 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:33,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,151 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:33,151 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:33,151 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration9_Loop [2021-10-28 09:48:33,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:33,152 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:33,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,226 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:33,227 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:33,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,228 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:33,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:33,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 09:48:33,258 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:33,258 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:33,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-10-28 09:48:33,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,297 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 09:48:33,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:33,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:33,314 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:33,314 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=4} Honda state: {ULTIMATE.start_main_#t~nondet4=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:33,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:33,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,341 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 09:48:33,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:33,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:33,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:33,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:33,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-10-28 09:48:33,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,385 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 09:48:33,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:33,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:33,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:33,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,423 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 09:48:33,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:33,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:33,494 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:33,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-10-28 09:48:33,497 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:33,497 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:33,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:33,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:33,497 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:33,498 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,498 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:33,498 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:33,498 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration9_Loop [2021-10-28 09:48:33,498 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:33,498 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:33,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:33,575 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:33,576 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:33,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,577 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,585 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:33,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:33,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:33,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:33,596 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:48:33,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:33,597 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:48:33,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:33,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-28 09:48:33,612 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:33,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:33,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,653 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,656 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:33,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:33,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:33,667 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:33,667 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:33,670 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:33,670 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:33,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-28 09:48:33,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:33,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:33,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,736 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,739 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:33,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:33,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:33,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:33,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:33,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:33,752 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:33,752 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:33,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-28 09:48:33,768 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:33,779 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:48:33,779 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:48:33,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:33,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:33,781 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:33,783 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:33,783 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:33,783 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:33,783 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 09:48:33,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-28 09:48:33,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:33,825 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:33,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:33,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:33,882 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:33,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:33,916 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:33,916 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:33,933 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 27 transitions. Complement of second has 7 states. [2021-10-28 09:48:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-28 09:48:33,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 09:48:33,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:33,935 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:48:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:33,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:33,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:33,981 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:33,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:34,012 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:34,012 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:34,024 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 27 transitions. Complement of second has 7 states. [2021-10-28 09:48:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-28 09:48:34,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 09:48:34,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:34,025 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:48:34,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:34,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:34,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:34,077 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:34,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:34,101 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:34,101 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:34,113 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 31 transitions. Complement of second has 6 states. [2021-10-28 09:48:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:34,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:34,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-28 09:48:34,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 09:48:34,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:34,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 3 letters. [2021-10-28 09:48:34,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:34,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 6 letters. [2021-10-28 09:48:34,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:34,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2021-10-28 09:48:34,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 09:48:34,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 19 states and 25 transitions. [2021-10-28 09:48:34,119 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 09:48:34,119 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 09:48:34,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2021-10-28 09:48:34,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:34,120 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-28 09:48:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2021-10-28 09:48:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-10-28 09:48:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-10-28 09:48:34,130 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-28 09:48:34,130 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-28 09:48:34,130 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:48:34,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-10-28 09:48:34,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 09:48:34,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:34,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:34,131 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:48:34,131 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:34,132 INFO L791 eck$LassoCheckResult]: Stem: 2279#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 2280#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 2289#L19 assume !(main_~x~0 > 0); 2287#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 2282#L27-2 [2021-10-28 09:48:34,132 INFO L793 eck$LassoCheckResult]: Loop: 2282#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 2285#L19 assume !(main_~x~0 > 0); 2281#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 2282#L27-2 [2021-10-28 09:48:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 963599, now seen corresponding path program 3 times [2021-10-28 09:48:34,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:34,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413988670] [2021-10-28 09:48:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:34,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:34,142 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:34,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash 40078, now seen corresponding path program 1 times [2021-10-28 09:48:34,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:34,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867016470] [2021-10-28 09:48:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:34,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:34,170 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:34,175 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:34,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1358182976, now seen corresponding path program 4 times [2021-10-28 09:48:34,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:34,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692840944] [2021-10-28 09:48:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:34,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:34,193 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:34,199 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:34,239 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:34,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:34,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:34,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:34,240 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:34,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:34,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:34,240 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration10_Loop [2021-10-28 09:48:34,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:34,241 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:34,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,344 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:34,345 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:34,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:34,348 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:34,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:34,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:34,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-28 09:48:34,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:34,373 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=-1, ULTIMATE.start_main_~x~0=-1} Honda state: {ULTIMATE.start_main_#t~nondet5=-1, ULTIMATE.start_main_~x~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:34,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:34,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:34,416 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:34,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:34,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:34,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-28 09:48:34,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:34,443 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:34,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:34,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:34,468 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:34,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-28 09:48:34,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:34,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:34,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:34,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:34,502 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:34,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-28 09:48:34,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:34,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:34,545 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:34,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2021-10-28 09:48:34,548 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:34,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:34,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:34,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:34,549 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:34,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,549 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:34,549 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:34,549 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration10_Loop [2021-10-28 09:48:34,549 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:34,549 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:34,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:34,643 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:34,643 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:34,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:34,649 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:34,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-28 09:48:34,652 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:34,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:34,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:34,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:34,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:34,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:34,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:34,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:34,664 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:34,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:34,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:34,690 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:34,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-28 09:48:34,692 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:34,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:34,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:34,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:34,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:34,703 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:34,703 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:34,732 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:34,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:34,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:34,764 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:34,783 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:34,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:34,794 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:34,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:34,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:34,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:34,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:34,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:34,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-28 09:48:34,812 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:34,815 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:48:34,816 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:48:34,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:34,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:34,818 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:34,823 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:34,823 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:34,823 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:34,823 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 09:48:34,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-28 09:48:34,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:34,861 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:34,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:34,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:34,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:34,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:34,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:34,971 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:48:34,972 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:34,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:34,999 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 30 transitions. Complement of second has 4 states. [2021-10-28 09:48:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-28 09:48:35,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 09:48:35,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:35,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 09:48:35,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:35,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-28 09:48:35,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:35,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2021-10-28 09:48:35,003 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:48:35,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2021-10-28 09:48:35,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:48:35,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:48:35,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:48:35,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:48:35,004 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:48:35,004 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:48:35,004 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:48:35,004 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 09:48:35,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:48:35,005 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:48:35,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:48:35,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:48:35 BoogieIcfgContainer [2021-10-28 09:48:35,025 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:48:35,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:48:35,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:48:35,026 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:48:35,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:24" (3/4) ... [2021-10-28 09:48:35,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:35,041 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:48:35,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:48:35,043 INFO L168 Benchmark]: Toolchain (without parser) took 10972.12 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 67.6 MB in the beginning and 132.3 MB in the end (delta: -64.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:35,044 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 62.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:35,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.93 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 64.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:35,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.96 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 63.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:35,045 INFO L168 Benchmark]: Boogie Preprocessor took 22.94 ms. Allocated memory is still 90.2 MB. Free memory was 63.5 MB in the beginning and 62.5 MB in the end (delta: 925.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:35,046 INFO L168 Benchmark]: RCFGBuilder took 303.66 ms. Allocated memory is still 90.2 MB. Free memory was 62.5 MB in the beginning and 54.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:35,046 INFO L168 Benchmark]: BuchiAutomizer took 10106.37 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 54.3 MB in the beginning and 132.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:35,047 INFO L168 Benchmark]: Witness Printer took 15.79 ms. Allocated memory is still 172.0 MB. Free memory was 132.4 MB in the beginning and 132.3 MB in the end (delta: 133.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:35,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory is still 62.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 452.93 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 64.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.96 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 63.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.94 ms. Allocated memory is still 90.2 MB. Free memory was 63.5 MB in the beginning and 62.5 MB in the end (delta: 925.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 303.66 ms. Allocated memory is still 90.2 MB. Free memory was 62.5 MB in the beginning and 54.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 10106.37 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 54.3 MB in the beginning and 132.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 15.79 ms. Allocated memory is still 172.0 MB. Free memory was 132.4 MB in the beginning and 132.3 MB in the end (delta: 133.9 kB). Peak memory consumption was 2.1 MB. 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 11 terminating modules (2 trivial, 7 deterministic, 2 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 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 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.0s and 11 iterations. TraceHistogramMax:2. Analysis of lassos took 8.0s. Construction of modules took 0.2s. Büchi inclusion checks took 1.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 173 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 122 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 122 SDtfs, 126 SDslu, 39 SDs, 0 SdLazy, 185 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax161 hnf100 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf94 smp87 dnf100 smp100 tf113 neg98 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 72ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 20 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 09:48:35,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:35,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:35,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d58b29-3596-4444-b95a-7738c751e523/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...