./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 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/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_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:38:48,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:38:48,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:38:48,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:38:48,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:38:48,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:38:48,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:38:48,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:38:48,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:38:48,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:38:48,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:38:48,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:38:48,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:38:48,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:38:48,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:38:48,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:38:48,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:38:48,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:38:48,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:38:48,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:38:48,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:38:48,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:38:48,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:38:48,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:38:48,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:38:48,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:38:48,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:38:48,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:38:48,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:38:48,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:38:48,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:38:48,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:38:48,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:38:48,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:38:48,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:38:48,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:38:48,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:38:48,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:38:48,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:38:48,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:38:48,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:38:48,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-23 13:38:48,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:38:48,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:38:48,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:38:48,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:38:48,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:38:48,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:38:48,919 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:38:48,919 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:38:48,919 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:38:48,920 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:38:48,921 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:38:48,922 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:38:48,922 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:38:48,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:38:48,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:38:48,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:38:48,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:38:48,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:38:48,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:38:48,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:38:48,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:38:48,924 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:38:48,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:38:48,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:38:48,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:38:48,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:38:48,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:38:48,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:38:48,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:38:48,928 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:38:48,928 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_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcb75d9c793adce3c2c2ca6d31453358360225b1f8596bb0dddfb529afd517e2 [2021-11-23 13:38:49,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:38:49,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:38:49,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:38:49,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:38:49,354 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:38:49,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2021-11-23 13:38:49,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/data/866d48f09/7c57353bb0bc41328ba1679e44cea469/FLAG748c77009 [2021-11-23 13:38:50,054 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:38:50,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2021-11-23 13:38:50,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/data/866d48f09/7c57353bb0bc41328ba1679e44cea469/FLAG748c77009 [2021-11-23 13:38:50,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/data/866d48f09/7c57353bb0bc41328ba1679e44cea469 [2021-11-23 13:38:50,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:38:50,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:38:50,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:38:50,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:38:50,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:38:50,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5800986c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50, skipping insertion in model container [2021-11-23 13:38:50,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:38:50,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:38:50,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:38:50,679 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:38:50,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:38:50,706 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:38:50,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50 WrapperNode [2021-11-23 13:38:50,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:38:50,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:38:50,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:38:50,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:38:50,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,756 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2021-11-23 13:38:50,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:38:50,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:38:50,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:38:50,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:38:50,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:38:50,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:38:50,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:38:50,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:38:50,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (1/1) ... [2021-11-23 13:38:50,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:50,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:50,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:38:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:38:50,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:38:50,986 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:38:50,992 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:38:51,133 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:38:51,143 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:38:51,143 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:38:51,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:51 BoogieIcfgContainer [2021-11-23 13:38:51,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:38:51,148 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:38:51,148 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:38:51,152 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:38:51,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:38:51,154 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:38:50" (1/3) ... [2021-11-23 13:38:51,156 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@520b25d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:38:51, skipping insertion in model container [2021-11-23 13:38:51,156 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:38:51,156 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:50" (2/3) ... [2021-11-23 13:38:51,157 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@520b25d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:38:51, skipping insertion in model container [2021-11-23 13:38:51,157 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:38:51,157 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:51" (3/3) ... [2021-11-23 13:38:51,160 INFO L388 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2021-11-23 13:38:51,252 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:38:51,252 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:38:51,252 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:38:51,253 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:38:51,253 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:38:51,253 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:38:51,253 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:38:51,253 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:38:51,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-11-23 13:38:51,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:38:51,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:51,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:51,305 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:38:51,305 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:51,305 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:38:51,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-11-23 13:38:51,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:38:51,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:51,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:51,308 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:38:51,308 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:51,317 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 10#L27-2true [2021-11-23 13:38:51,317 INFO L793 eck$LassoCheckResult]: Loop: 10#L27-2true assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 8#L19true assume main_~x~0#1 > 0; 9#L20true assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 10#L27-2true [2021-11-23 13:38:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-23 13:38:51,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:51,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514539234] [2021-11-23 13:38:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:51,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:51,423 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:51,446 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:51,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 40813, now seen corresponding path program 1 times [2021-11-23 13:38:51,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:51,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846909891] [2021-11-23 13:38:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:51,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:51,464 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:51,474 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash 28699755, now seen corresponding path program 1 times [2021-11-23 13:38:51,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:51,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054425922] [2021-11-23 13:38:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:51,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:51,488 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:51,497 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:51,620 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:51,621 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:51,622 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:51,622 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:51,622 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:38:51,622 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:51,623 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:51,623 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:51,623 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2021-11-23 13:38:51,623 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:51,624 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:51,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:51,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:51,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:51,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:51,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:51,789 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:51,790 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:38:51,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:51,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:51,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:51,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:38:51,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:51,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:51,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:51,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:51,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:51,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:51,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:38:51,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:51,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:38:51,982 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:38:51,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:51,987 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:51,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:51,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:51,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:51,987 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:38:51,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:51,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:51,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:51,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2021-11-23 13:38:51,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:51,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:51,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,139 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:52,145 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:38:52,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:52,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:52,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:52,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:38:52,153 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 [2021-11-23 13:38:52,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:52,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:52,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:52,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:52,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:52,172 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:52,172 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:52,189 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:38:52,209 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:38:52,209 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:38:52,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:52,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:52,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:52,251 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:38:52,251 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:38:52,252 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:38:52,253 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:38:52,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 13:38:52,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:52,306 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:38:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:52,361 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:52,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:52,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:52,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:52,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:52,590 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 [2021-11-23 13:38:52,592 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:52,699 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 65 transitions. Complement of second has 8 states. [2021-11-23 13:38:52,701 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 [2021-11-23 13:38:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:52,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2021-11-23 13:38:52,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 2 letters. Loop has 3 letters. [2021-11-23 13:38:52,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:52,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-23 13:38:52,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:52,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 2 letters. Loop has 6 letters. [2021-11-23 13:38:52,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:52,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 65 transitions. [2021-11-23 13:38:52,728 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-11-23 13:38:52,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 17 states and 25 transitions. [2021-11-23 13:38:52,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-23 13:38:52,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-11-23 13:38:52,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 25 transitions. [2021-11-23 13:38:52,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:52,742 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2021-11-23 13:38:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 25 transitions. [2021-11-23 13:38:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-23 13:38:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 states have internal predecessors, (22), 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) [2021-11-23 13:38:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2021-11-23 13:38:52,779 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-11-23 13:38:52,779 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2021-11-23 13:38:52,779 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 13:38:52,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2021-11-23 13:38:52,783 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-11-23 13:38:52,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:52,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:52,784 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-23 13:38:52,784 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:52,785 INFO L791 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 100#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 103#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 113#L19 assume !(main_~x~0#1 > 0); 101#L27 [2021-11-23 13:38:52,785 INFO L793 eck$LassoCheckResult]: Loop: 101#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 102#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 112#L19 assume !(main_~x~0#1 > 0); 101#L27 [2021-11-23 13:38:52,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:52,790 INFO L85 PathProgramCache]: Analyzing trace with hash 925806, now seen corresponding path program 1 times [2021-11-23 13:38:52,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:52,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017931031] [2021-11-23 13:38:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:52,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:52,804 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:52,816 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:52,818 INFO L85 PathProgramCache]: Analyzing trace with hash 54179, now seen corresponding path program 1 times [2021-11-23 13:38:52,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:52,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089846791] [2021-11-23 13:38:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:52,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:52,848 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:52,858 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1810907158, now seen corresponding path program 1 times [2021-11-23 13:38:52,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:52,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294491579] [2021-11-23 13:38:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:52,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:52,887 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:52,894 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:52,936 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:52,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:52,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:52,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:52,937 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:38:52,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:52,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:52,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:52,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2021-11-23 13:38:52,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:52,938 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:52,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:52,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:53,056 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:53,056 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:38:53,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:53,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:53,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:53,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:53,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:53,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:38:53,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:53,102 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: [] [2021-11-23 13:38:53,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:53,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:53,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:53,154 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:53,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:53,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:53,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:38:53,189 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:53,190 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: [] [2021-11-23 13:38:53,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:53,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:53,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:53,246 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:53,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:38:53,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:53,255 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:53,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:53,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:53,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:53,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:53,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 13:38:53,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:38:53,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:53,436 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:38:53,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:53,440 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:53,440 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:53,440 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:53,440 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:53,440 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:38:53,440 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:53,440 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:53,440 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:53,441 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2021-11-23 13:38:53,441 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:53,441 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:53,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:53,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:53,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:53,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:53,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:53,590 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:53,591 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:38:53,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:53,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:53,593 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:53,603 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 [2021-11-23 13:38:53,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:53,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:53,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:53,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:53,621 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:38:53,622 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:38:53,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-23 13:38:53,641 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:38:53,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:53,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:53,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:53,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:53,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-23 13:38:53,701 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 [2021-11-23 13:38:53,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:53,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:53,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:53,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:53,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:53,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:53,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:53,733 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:38:53,736 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:38:53,737 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:38:53,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:53,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:53,744 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:53,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-23 13:38:53,746 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:38:53,746 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:38:53,746 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:38:53,747 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:38:53,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:53,794 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:38:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:53,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:53,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:53,851 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:53,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:53,920 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 [2021-11-23 13:38:53,920 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10 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) [2021-11-23 13:38:53,989 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10. 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 33 states and 51 transitions. Complement of second has 7 states. [2021-11-23 13:38:53,990 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 [2021-11-23 13:38:53,991 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) [2021-11-23 13:38:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-11-23 13:38:53,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-23 13:38:53,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:53,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-23 13:38:53,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:53,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-23 13:38:53,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:53,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 51 transitions. [2021-11-23 13:38:54,003 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2021-11-23 13:38:54,006 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 51 transitions. [2021-11-23 13:38:54,006 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-23 13:38:54,006 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-11-23 13:38:54,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 51 transitions. [2021-11-23 13:38:54,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:54,007 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 51 transitions. [2021-11-23 13:38:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 51 transitions. [2021-11-23 13:38:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-11-23 13:38:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 30 states have internal predecessors, (49), 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) [2021-11-23 13:38:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 49 transitions. [2021-11-23 13:38:54,023 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 49 transitions. [2021-11-23 13:38:54,024 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 49 transitions. [2021-11-23 13:38:54,024 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-23 13:38:54,024 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 49 transitions. [2021-11-23 13:38:54,025 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2021-11-23 13:38:54,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:54,025 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:54,026 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-23 13:38:54,026 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:54,026 INFO L791 eck$LassoCheckResult]: Stem: 192#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 193#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 198#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 210#L19 assume main_~x~0#1 > 0; 200#L20 [2021-11-23 13:38:54,026 INFO L793 eck$LassoCheckResult]: Loop: 200#L20 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 216#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 199#L19 assume main_~x~0#1 > 0; 200#L20 [2021-11-23 13:38:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-11-23 13:38:54,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:54,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792443635] [2021-11-23 13:38:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:54,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,040 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,047 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash 48405, now seen corresponding path program 1 times [2021-11-23 13:38:54,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:54,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992423907] [2021-11-23 13:38:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:54,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,069 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,074 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:54,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:54,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1810663056, now seen corresponding path program 1 times [2021-11-23 13:38:54,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:54,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703461857] [2021-11-23 13:38:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:54,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,082 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:54,144 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:54,144 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:54,144 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:54,144 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:54,145 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:38:54,145 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:54,145 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:54,145 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:54,145 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2021-11-23 13:38:54,145 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:54,145 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:54,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,231 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:54,231 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:38:54,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:54,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:54,234 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:54,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:54,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:54,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-23 13:38:54,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:54,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:54,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:54,357 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:54,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:54,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:38:54,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:54,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-23 13:38:54,533 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:38:54,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:54,543 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:54,543 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:54,543 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:54,544 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:54,544 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:38:54,544 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:54,544 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:54,544 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:54,544 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2021-11-23 13:38:54,545 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:54,545 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:54,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:54,633 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:54,634 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:38:54,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:54,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:54,635 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:54,650 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 [2021-11-23 13:38:54,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-23 13:38:54,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:54,662 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:54,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:54,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:54,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:54,664 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:54,664 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:54,674 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:38:54,679 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:38:54,679 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:38:54,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:54,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:54,681 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:54,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-23 13:38:54,691 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:38:54,691 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:38:54,691 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:38:54,691 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:38:54,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:54,742 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:38:54,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:54,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:54,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:54,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:54,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:54,839 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 [2021-11-23 13:38:54,840 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 49 transitions. cyclomatic complexity: 23 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) [2021-11-23 13:38:54,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 49 transitions. cyclomatic complexity: 23. 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 97 states and 150 transitions. Complement of second has 7 states. [2021-11-23 13:38:54,894 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 [2021-11-23 13:38:54,896 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) [2021-11-23 13:38:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-11-23 13:38:54,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-23 13:38:54,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:54,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-23 13:38:54,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:54,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-23 13:38:54,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:54,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 150 transitions. [2021-11-23 13:38:54,910 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2021-11-23 13:38:54,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 84 states and 129 transitions. [2021-11-23 13:38:54,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-11-23 13:38:54,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-11-23 13:38:54,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 129 transitions. [2021-11-23 13:38:54,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:54,920 INFO L681 BuchiCegarLoop]: Abstraction has 84 states and 129 transitions. [2021-11-23 13:38:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 129 transitions. [2021-11-23 13:38:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-11-23 13:38:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 78 states have internal predecessors, (124), 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) [2021-11-23 13:38:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 124 transitions. [2021-11-23 13:38:54,943 INFO L704 BuchiCegarLoop]: Abstraction has 79 states and 124 transitions. [2021-11-23 13:38:54,944 INFO L587 BuchiCegarLoop]: Abstraction has 79 states and 124 transitions. [2021-11-23 13:38:54,944 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-23 13:38:54,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states and 124 transitions. [2021-11-23 13:38:54,949 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2021-11-23 13:38:54,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:54,954 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:54,954 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-23 13:38:54,954 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:54,955 INFO L791 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 367#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 372#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 405#L19 assume !(main_~x~0#1 > 0); 404#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 400#L27-2 [2021-11-23 13:38:54,955 INFO L793 eck$LassoCheckResult]: Loop: 400#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 397#L19 assume !(main_~x~0#1 > 0); 398#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 400#L27-2 [2021-11-23 13:38:54,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 28700013, now seen corresponding path program 1 times [2021-11-23 13:38:54,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:54,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458272966] [2021-11-23 13:38:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:54,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,971 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,979 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:54,981 INFO L85 PathProgramCache]: Analyzing trace with hash 41069, now seen corresponding path program 2 times [2021-11-23 13:38:54,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:54,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133747143] [2021-11-23 13:38:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:54,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:54,996 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,005 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash 303606657, now seen corresponding path program 1 times [2021-11-23 13:38:55,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:55,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012846838] [2021-11-23 13:38:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:55,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,041 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,049 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:55,093 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:55,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:55,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:55,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:55,094 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:38:55,095 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,095 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:55,095 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:55,095 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2021-11-23 13:38:55,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:55,096 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:55,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,185 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:55,185 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:38:55,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:55,187 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:55,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-23 13:38:55,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:55,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:55,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:55,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:55,260 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:55,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:38:55,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:55,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-23 13:38:55,357 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:38:55,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:55,366 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:55,366 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:55,366 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:55,366 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:55,367 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:38:55,367 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,367 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:55,367 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:55,367 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2021-11-23 13:38:55,367 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:55,367 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:55,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,454 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:55,455 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:38:55,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:55,456 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:55,470 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 [2021-11-23 13:38:55,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:55,484 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:55,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:55,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:55,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:55,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:55,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:55,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-23 13:38:55,509 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:38:55,514 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:38:55,514 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:38:55,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:55,539 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:55,556 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:38:55,557 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:38:55,557 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:38:55,557 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:38:55,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-23 13:38:55,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:55,603 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:38:55,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:55,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:55,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:55,656 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:55,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:55,683 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 [2021-11-23 13:38:55,683 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 124 transitions. cyclomatic complexity: 58 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) [2021-11-23 13:38:55,710 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 124 transitions. cyclomatic complexity: 58. 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 121 states and 194 transitions. Complement of second has 7 states. [2021-11-23 13:38:55,711 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 [2021-11-23 13:38:55,712 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) [2021-11-23 13:38:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-11-23 13:38:55,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-23 13:38:55,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:55,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-23 13:38:55,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:55,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2021-11-23 13:38:55,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:55,715 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 194 transitions. [2021-11-23 13:38:55,718 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 27 [2021-11-23 13:38:55,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 119 states and 189 transitions. [2021-11-23 13:38:55,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2021-11-23 13:38:55,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-11-23 13:38:55,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 189 transitions. [2021-11-23 13:38:55,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:55,722 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 189 transitions. [2021-11-23 13:38:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 189 transitions. [2021-11-23 13:38:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2021-11-23 13:38:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 1.5826086956521739) internal successors, (182), 114 states have internal predecessors, (182), 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) [2021-11-23 13:38:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 182 transitions. [2021-11-23 13:38:55,733 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 182 transitions. [2021-11-23 13:38:55,733 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 182 transitions. [2021-11-23 13:38:55,734 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-23 13:38:55,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 182 transitions. [2021-11-23 13:38:55,735 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 27 [2021-11-23 13:38:55,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:55,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:55,736 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-11-23 13:38:55,737 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:55,737 INFO L791 eck$LassoCheckResult]: Stem: 614#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 615#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 624#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 659#L19 assume main_~x~0#1 > 0; 723#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 691#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 689#L19 assume main_~x~0#1 > 0; 680#L20 [2021-11-23 13:38:55,737 INFO L793 eck$LassoCheckResult]: Loop: 680#L20 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 681#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 693#L19 assume main_~x~0#1 > 0; 680#L20 [2021-11-23 13:38:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:55,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1810661134, now seen corresponding path program 2 times [2021-11-23 13:38:55,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:55,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698776095] [2021-11-23 13:38:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:55,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,745 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash 48405, now seen corresponding path program 2 times [2021-11-23 13:38:55,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:55,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062207824] [2021-11-23 13:38:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:55,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,758 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,762 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash 911591144, now seen corresponding path program 1 times [2021-11-23 13:38:55,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:55,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249334985] [2021-11-23 13:38:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:55,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,770 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:55,777 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:55,815 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:55,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:55,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:55,815 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:55,815 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:38:55,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,816 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:55,816 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:55,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2021-11-23 13:38:55,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:55,817 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:55,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:55,892 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:55,893 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:38:55,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:55,901 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:55,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:55,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:55,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-23 13:38:55,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:55,943 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:38:55,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:55,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:55,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:55,976 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:55,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-23 13:38:55,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:55,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:55,990 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:55,990 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:38:56,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,020 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-23 13:38:56,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:56,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:56,077 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:56,077 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:38:56,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,165 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-23 13:38:56,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:56,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:56,252 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:56,252 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:38:56,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,337 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:56,339 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:56,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-23 13:38:56,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-11-23 13:38:56,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,390 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-23 13:38:56,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:38:56,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:56,509 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:38:56,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,516 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:56,517 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:56,517 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:56,517 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:56,517 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:38:56,517 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,517 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:56,517 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:56,517 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2021-11-23 13:38:56,517 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:56,517 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:56,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:56,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:56,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:56,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:56,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:56,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,681 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:56,681 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:38:56,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,682 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,690 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 [2021-11-23 13:38:56,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:56,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:56,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:56,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:56,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:56,707 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:56,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:56,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-23 13:38:56,721 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:38:56,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,765 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,770 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 [2021-11-23 13:38:56,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:56,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:56,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:56,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:56,787 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:38:56,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:38:56,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-23 13:38:56,801 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:38:56,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,837 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-23 13:38:56,839 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 [2021-11-23 13:38:56,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:56,868 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:56,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:56,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:56,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:56,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:56,870 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:56,891 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:38:56,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:56,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,934 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-23 13:38:56,946 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 [2021-11-23 13:38:56,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:56,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:56,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:56,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:56,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:56,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:56,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:56,966 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:38:56,983 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:38:56,983 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:38:56,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:56,986 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:56,989 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:38:56,989 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:38:56,989 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:38:56,989 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:38:56,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-23 13:38:57,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:57,020 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:38:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:57,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:57,119 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 [2021-11-23 13:38:57,119 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:57,154 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 197 states and 309 transitions. Complement of second has 7 states. [2021-11-23 13:38:57,155 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 [2021-11-23 13:38:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-11-23 13:38:57,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-23 13:38:57,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:57,157 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:38:57,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:57,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:57,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:57,223 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 [2021-11-23 13:38:57,224 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:57,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 181 states and 280 transitions. Complement of second has 7 states. [2021-11-23 13:38:57,257 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 [2021-11-23 13:38:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-11-23 13:38:57,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-23 13:38:57,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:57,259 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:38:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:57,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:57,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:57,332 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 [2021-11-23 13:38:57,332 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:57,360 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 182 transitions. cyclomatic complexity: 87. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 313 states and 486 transitions. Complement of second has 9 states. [2021-11-23 13:38:57,361 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 [2021-11-23 13:38:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-23 13:38:57,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-23 13:38:57,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:57,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-23 13:38:57,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:57,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-23 13:38:57,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:57,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 313 states and 486 transitions. [2021-11-23 13:38:57,370 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 62 [2021-11-23 13:38:57,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 313 states to 223 states and 344 transitions. [2021-11-23 13:38:57,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-11-23 13:38:57,375 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-11-23 13:38:57,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 344 transitions. [2021-11-23 13:38:57,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:57,376 INFO L681 BuchiCegarLoop]: Abstraction has 223 states and 344 transitions. [2021-11-23 13:38:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states and 344 transitions. [2021-11-23 13:38:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 123. [2021-11-23 13:38:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 123 states have (on average 1.6178861788617886) internal successors, (199), 122 states have internal predecessors, (199), 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) [2021-11-23 13:38:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 199 transitions. [2021-11-23 13:38:57,388 INFO L704 BuchiCegarLoop]: Abstraction has 123 states and 199 transitions. [2021-11-23 13:38:57,388 INFO L587 BuchiCegarLoop]: Abstraction has 123 states and 199 transitions. [2021-11-23 13:38:57,388 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-23 13:38:57,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 123 states and 199 transitions. [2021-11-23 13:38:57,389 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 48 [2021-11-23 13:38:57,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:57,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:57,390 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-23 13:38:57,391 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2021-11-23 13:38:57,391 INFO L791 eck$LassoCheckResult]: Stem: 1557#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1558#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1567#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1648#L19 assume !(main_~x~0#1 > 0); 1645#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 1623#L27-2 [2021-11-23 13:38:57,391 INFO L793 eck$LassoCheckResult]: Loop: 1623#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1676#L19 assume main_~x~0#1 > 0; 1675#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1604#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1602#L19 assume !(main_~x~0#1 > 0); 1603#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 1623#L27-2 [2021-11-23 13:38:57,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:57,392 INFO L85 PathProgramCache]: Analyzing trace with hash 28700011, now seen corresponding path program 2 times [2021-11-23 13:38:57,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:57,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433856277] [2021-11-23 13:38:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:57,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:57,397 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:57,401 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:57,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1215871361, now seen corresponding path program 1 times [2021-11-23 13:38:57,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:57,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350009332] [2021-11-23 13:38:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:57,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:57,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:57,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350009332] [2021-11-23 13:38:57,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350009332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:38:57,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:38:57,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:38:57,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124447270] [2021-11-23 13:38:57,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:38:57,496 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 13:38:57,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:38:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:38:57,503 INFO L87 Difference]: Start difference. First operand 123 states and 199 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) [2021-11-23 13:38:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:57,534 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2021-11-23 13:38:57,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:38:57,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 96 transitions. [2021-11-23 13:38:57,544 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2021-11-23 13:38:57,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 48 states and 67 transitions. [2021-11-23 13:38:57,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-11-23 13:38:57,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-11-23 13:38:57,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 67 transitions. [2021-11-23 13:38:57,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:57,546 INFO L681 BuchiCegarLoop]: Abstraction has 48 states and 67 transitions. [2021-11-23 13:38:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 67 transitions. [2021-11-23 13:38:57,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 24. [2021-11-23 13:38:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 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) [2021-11-23 13:38:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-11-23 13:38:57,557 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-11-23 13:38:57,558 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-11-23 13:38:57,558 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-23 13:38:57,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2021-11-23 13:38:57,558 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-23 13:38:57,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:57,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:57,560 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-23 13:38:57,560 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:57,560 INFO L791 eck$LassoCheckResult]: Stem: 1757#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1758#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1768#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1778#L19 assume !(main_~x~0#1 > 0); 1777#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 1769#L27-2 [2021-11-23 13:38:57,560 INFO L793 eck$LassoCheckResult]: Loop: 1769#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 1763#L19 assume main_~x~0#1 > 0; 1764#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1769#L27-2 [2021-11-23 13:38:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash 28700011, now seen corresponding path program 3 times [2021-11-23 13:38:57,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:57,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217471902] [2021-11-23 13:38:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:57,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:57,571 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:57,576 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 40813, now seen corresponding path program 2 times [2021-11-23 13:38:57,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:57,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154776896] [2021-11-23 13:38:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:57,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:57,591 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:57,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:57,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash 303546819, now seen corresponding path program 1 times [2021-11-23 13:38:57,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:57,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481252055] [2021-11-23 13:38:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:57,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:57,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:57,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481252055] [2021-11-23 13:38:57,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481252055] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:38:57,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196179932] [2021-11-23 13:38:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:57,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:57,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:57,665 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:38:57,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-23 13:38:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:57,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:57,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:57,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:57,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196179932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:38:57,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:38:57,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-11-23 13:38:57,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196179686] [2021-11-23 13:38:57,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:38:57,831 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:57,831 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:57,831 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:57,831 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:57,832 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:38:57,832 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:57,832 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:57,832 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:57,832 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration7_Loop [2021-11-23 13:38:57,832 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:57,833 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:57,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:57,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:57,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:57,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:57,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:57,916 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:57,916 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:38:57,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:57,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:57,921 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:57,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:57,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:57,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-23 13:38:57,958 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:57,958 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=3, ULTIMATE.start_main_~y~0#1=3} Honda state: {ULTIMATE.start_main_#t~nondet3#1=3, ULTIMATE.start_main_~y~0#1=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:38:58,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:58,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:58,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:58,002 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:58,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:58,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:58,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-23 13:38:58,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:58,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:58,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:58,085 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:58,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-23 13:38:58,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:38:58,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:58,169 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:38:58,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:58,178 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:58,178 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:58,178 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:58,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:58,179 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:38:58,179 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:58,179 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:58,179 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:58,179 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration7_Loop [2021-11-23 13:38:58,179 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:58,179 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:58,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,300 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:58,300 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:38:58,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:58,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:58,313 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:58,316 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 [2021-11-23 13:38:58,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:58,328 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:58,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:58,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:58,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:58,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:58,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:58,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-23 13:38:58,353 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:38:58,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:58,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:58,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:58,400 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:58,405 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:38:58,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-23 13:38:58,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:58,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:58,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:58,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:58,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:58,419 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:58,419 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:58,441 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:38:58,446 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:38:58,446 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:38:58,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:58,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:58,461 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:58,464 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:38:58,464 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:38:58,464 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:38:58,464 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:38:58,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-23 13:38:58,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:58,511 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:38:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:58,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:58,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:58,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:58,588 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 [2021-11-23 13:38:58,589 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 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) [2021-11-23 13:38:58,626 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. 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 72 states and 101 transitions. Complement of second has 7 states. [2021-11-23 13:38:58,626 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 [2021-11-23 13:38:58,628 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) [2021-11-23 13:38:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-11-23 13:38:58,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-23 13:38:58,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:58,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-23 13:38:58,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:58,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2021-11-23 13:38:58,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:58,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 101 transitions. [2021-11-23 13:38:58,635 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 20 [2021-11-23 13:38:58,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 50 states and 70 transitions. [2021-11-23 13:38:58,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-11-23 13:38:58,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-11-23 13:38:58,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 70 transitions. [2021-11-23 13:38:58,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:58,638 INFO L681 BuchiCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-11-23 13:38:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 70 transitions. [2021-11-23 13:38:58,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2021-11-23 13:38:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 35 states have internal predecessors, (51), 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) [2021-11-23 13:38:58,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2021-11-23 13:38:58,647 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2021-11-23 13:38:58,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:58,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:38:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:38:58,648 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-11-23 13:38:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:58,671 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-23 13:38:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:38:58,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 56 transitions. [2021-11-23 13:38:58,674 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-11-23 13:38:58,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 40 states and 54 transitions. [2021-11-23 13:38:58,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-11-23 13:38:58,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-11-23 13:38:58,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 54 transitions. [2021-11-23 13:38:58,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:58,676 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 54 transitions. [2021-11-23 13:38:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 54 transitions. [2021-11-23 13:38:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-11-23 13:38:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 26 states have internal predecessors, (36), 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) [2021-11-23 13:38:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-11-23 13:38:58,684 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-11-23 13:38:58,685 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-11-23 13:38:58,685 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-23 13:38:58,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2021-11-23 13:38:58,685 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-11-23 13:38:58,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:58,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:58,686 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-11-23 13:38:58,687 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:58,687 INFO L791 eck$LassoCheckResult]: Stem: 2024#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2025#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2032#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2044#L19 assume !(main_~x~0#1 > 0); 2041#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2043#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2045#L19 assume main_~x~0#1 > 0; 2039#L20 [2021-11-23 13:38:58,687 INFO L793 eck$LassoCheckResult]: Loop: 2039#L20 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2034#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2040#L19 assume main_~x~0#1 > 0; 2039#L20 [2021-11-23 13:38:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:58,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1810909072, now seen corresponding path program 1 times [2021-11-23 13:38:58,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:58,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190584535] [2021-11-23 13:38:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:58,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:58,737 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:58,749 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash 46483, now seen corresponding path program 3 times [2021-11-23 13:38:58,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:58,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578285933] [2021-11-23 13:38:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:58,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:58,768 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:58,774 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:58,776 INFO L85 PathProgramCache]: Analyzing trace with hash -292024412, now seen corresponding path program 1 times [2021-11-23 13:38:58,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:58,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257754463] [2021-11-23 13:38:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:58,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:58,806 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:58,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:58,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:58,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:58,891 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:58,891 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:58,891 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:58,891 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:58,891 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:38:58,892 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:58,892 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:58,892 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:58,892 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration8_Loop [2021-11-23 13:38:58,892 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:58,892 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:58,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:58,991 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:58,991 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:38:58,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:58,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:58,994 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:59,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:59,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:59,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-23 13:38:59,046 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:59,046 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: [] [2021-11-23 13:38:59,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:59,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:59,094 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:59,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:59,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:59,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-23 13:38:59,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:59,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:59,176 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:59,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:38:59,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:59,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-23 13:38:59,321 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:38:59,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:59,330 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:59,330 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:59,330 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:59,330 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:59,330 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:38:59,330 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,331 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:59,331 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:59,331 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration8_Loop [2021-11-23 13:38:59,331 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:59,331 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:59,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,427 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:59,428 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:38:59,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:59,429 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:59,432 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 [2021-11-23 13:38:59,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:38:59,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:38:59,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:38:59,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:38:59,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:38:59,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:38:59,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:38:59,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-23 13:38:59,481 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:38:59,488 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:38:59,488 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:38:59,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:59,490 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:59,492 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:38:59,493 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:38:59,493 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:38:59,493 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:38:59,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-23 13:38:59,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:59,544 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:38:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:59,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:38:59,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:59,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:38:59,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:59,604 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 [2021-11-23 13:38:59,604 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:59,629 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 36 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 50 transitions. Complement of second has 6 states. [2021-11-23 13:38:59,629 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 [2021-11-23 13:38:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-11-23 13:38:59,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-23 13:38:59,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:59,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-23 13:38:59,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:59,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-23 13:38:59,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:38:59,632 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 50 transitions. [2021-11-23 13:38:59,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-23 13:38:59,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 25 transitions. [2021-11-23 13:38:59,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-11-23 13:38:59,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-11-23 13:38:59,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 25 transitions. [2021-11-23 13:38:59,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:38:59,633 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-11-23 13:38:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 25 transitions. [2021-11-23 13:38:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-11-23 13:38:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 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) [2021-11-23 13:38:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-11-23 13:38:59,635 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-11-23 13:38:59,635 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-11-23 13:38:59,635 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-23 13:38:59,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2021-11-23 13:38:59,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-23 13:38:59,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:38:59,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:38:59,636 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2021-11-23 13:38:59,636 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:38:59,636 INFO L791 eck$LassoCheckResult]: Stem: 2140#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2141#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2150#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2156#L19 assume !(main_~x~0#1 > 0); 2155#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2152#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2153#L19 assume !(main_~x~0#1 > 0); 2142#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2143#L27-2 [2021-11-23 13:38:59,637 INFO L793 eck$LassoCheckResult]: Loop: 2143#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2146#L19 assume !(main_~x~0#1 > 0); 2147#L27 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~x~0#1 := 1 + main_~x~0#1; 2143#L27-2 [2021-11-23 13:38:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash 303606659, now seen corresponding path program 2 times [2021-11-23 13:38:59,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:59,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924709173] [2021-11-23 13:38:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:59,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:59,644 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:59,650 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:59,651 INFO L85 PathProgramCache]: Analyzing trace with hash 41069, now seen corresponding path program 3 times [2021-11-23 13:38:59,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:59,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245361738] [2021-11-23 13:38:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:59,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:59,655 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:59,657 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash -455135829, now seen corresponding path program 2 times [2021-11-23 13:38:59,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:59,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471800287] [2021-11-23 13:38:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:59,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:59,664 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:38:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:38:59,671 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:38:59,707 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:38:59,707 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:38:59,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:38:59,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:38:59,708 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:38:59,708 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,708 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:38:59,708 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:38:59,708 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration9_Loop [2021-11-23 13:38:59,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:38:59,709 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:38:59,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:38:59,799 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:38:59,799 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:38:59,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:59,801 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:59,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:59,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:59,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-23 13:38:59,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:59,831 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: [] [2021-11-23 13:38:59,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:59,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:59,875 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:59,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:59,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:59,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-23 13:38:59,909 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:38:59,909 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=1} Honda state: {ULTIMATE.start_main_~y~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:38:59,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:59,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:38:59,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:59,955 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:59,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:38:59,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:38:59,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-23 13:39:00,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:00,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:00,022 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:00,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:39:00,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:39:00,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-23 13:39:00,095 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:39:00,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:00,098 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:39:00,099 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:39:00,099 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:39:00,099 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:39:00,099 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:39:00,099 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,099 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:39:00,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:39:00,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration9_Loop [2021-11-23 13:39:00,099 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:39:00,099 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:39:00,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,177 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:39:00,177 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:39:00,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:00,179 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:00,186 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 [2021-11-23 13:39:00,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:39:00,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:39:00,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:39:00,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:39:00,200 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:39:00,200 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:39:00,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-23 13:39:00,214 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:39:00,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:00,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:00,257 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:00,259 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 [2021-11-23 13:39:00,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:39:00,271 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:39:00,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:39:00,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:39:00,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:39:00,272 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:39:00,272 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:39:00,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-23 13:39:00,285 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:39:00,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:00,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:00,331 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:00,333 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 [2021-11-23 13:39:00,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:39:00,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:39:00,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:39:00,346 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:39:00,346 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:39:00,347 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:39:00,347 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:39:00,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-23 13:39:00,365 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:39:00,369 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:39:00,369 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:39:00,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:00,371 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:00,373 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:39:00,374 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:39:00,374 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:39:00,374 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:39:00,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-23 13:39:00,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:00,418 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:39:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:39:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:00,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:39:00,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:00,464 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:39:00,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:39:00,490 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 [2021-11-23 13:39:00,490 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:39:00,503 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 7 states. [2021-11-23 13:39:00,503 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 [2021-11-23 13:39:00,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:39:00,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-11-23 13:39:00,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-23 13:39:00,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:39:00,504 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:39:00,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:39:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:00,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:39:00,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:00,548 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:39:00,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:39:00,572 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 [2021-11-23 13:39:00,572 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:39:00,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 7 states. [2021-11-23 13:39:00,592 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 [2021-11-23 13:39:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:39:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-11-23 13:39:00,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-23 13:39:00,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:39:00,593 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:39:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:39:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:00,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:39:00,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:00,648 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:39:00,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:39:00,671 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 [2021-11-23 13:39:00,671 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:39:00,683 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 32 transitions. Complement of second has 6 states. [2021-11-23 13:39:00,683 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 [2021-11-23 13:39:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:39:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-11-23 13:39:00,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-23 13:39:00,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:39:00,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 11 letters. Loop has 3 letters. [2021-11-23 13:39:00,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:39:00,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2021-11-23 13:39:00,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:39:00,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 32 transitions. [2021-11-23 13:39:00,686 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-23 13:39:00,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 26 transitions. [2021-11-23 13:39:00,687 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-11-23 13:39:00,687 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-23 13:39:00,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2021-11-23 13:39:00,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:39:00,687 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-11-23 13:39:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2021-11-23 13:39:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2021-11-23 13:39:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-11-23 13:39:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-11-23 13:39:00,689 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-23 13:39:00,689 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-23 13:39:00,689 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-23 13:39:00,689 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2021-11-23 13:39:00,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-23 13:39:00,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:39:00,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:39:00,690 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-23 13:39:00,690 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-23 13:39:00,690 INFO L791 eck$LassoCheckResult]: Stem: 2363#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2371#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2376#L19 assume !(main_~x~0#1 > 0); 2375#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2366#L27-2 [2021-11-23 13:39:00,690 INFO L793 eck$LassoCheckResult]: Loop: 2366#L27-2 assume !!(0 != main_~x~0#1 && main_~y~0#1 > 0); 2369#L19 assume !(main_~x~0#1 > 0); 2365#L27 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~y~0#1 := main_~y~0#1 - 1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2366#L27-2 [2021-11-23 13:39:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:39:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash 28700013, now seen corresponding path program 3 times [2021-11-23 13:39:00,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:39:00,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153932921] [2021-11-23 13:39:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:39:00,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:39:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:39:00,695 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:39:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:39:00,699 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:39:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:39:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash 41071, now seen corresponding path program 1 times [2021-11-23 13:39:00,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:39:00,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208748064] [2021-11-23 13:39:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:39:00,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:39:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:39:00,704 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:39:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:39:00,707 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:39:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:39:00,708 INFO L85 PathProgramCache]: Analyzing trace with hash 303606659, now seen corresponding path program 4 times [2021-11-23 13:39:00,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:39:00,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157431722] [2021-11-23 13:39:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:39:00,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:39:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:39:00,713 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:39:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:39:00,718 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:39:00,762 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:39:00,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:39:00,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:39:00,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:39:00,763 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:39:00,763 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,763 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:39:00,763 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:39:00,763 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration10_Loop [2021-11-23 13:39:00,763 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:39:00,764 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:39:00,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:00,861 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:39:00,862 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:39:00,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:00,864 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:00,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:39:00,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:39:00,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-23 13:39:00,896 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:39:00,896 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: [] [2021-11-23 13:39:00,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-11-23 13:39:00,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:00,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:00,931 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:00,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:39:00,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:39:00,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-23 13:39:01,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:01,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:01,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:01,009 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:01,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:39:01,011 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:39:01,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-23 13:39:01,089 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:39:01,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:01,093 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:39:01,093 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:39:01,093 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:39:01,093 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:39:01,094 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:39:01,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:01,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:39:01,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:39:01,094 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration10_Loop [2021-11-23 13:39:01,094 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:39:01,094 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:39:01,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:01,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:01,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:01,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:01,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:39:01,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:01,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:01,243 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:39:01,243 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:39:01,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:01,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:01,248 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:01,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-23 13:39:01,249 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 [2021-11-23 13:39:01,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:39:01,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:39:01,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:39:01,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:39:01,269 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:39:01,269 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:39:01,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:39:01,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-11-23 13:39:01,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:01,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:01,335 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:01,337 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 [2021-11-23 13:39:01,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:39:01,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:39:01,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:39:01,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:39:01,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:39:01,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:39:01,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:39:01,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-23 13:39:01,365 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:39:01,367 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:39:01,367 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:39:01,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:39:01,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:39:01,369 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:39:01,371 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:39:01,371 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:39:01,372 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:39:01,372 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-11-23 13:39:01,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-11-23 13:39:01,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-11-23 13:39:01,407 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:39:01,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:39:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:01,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:39:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:39:01,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:39:01,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:39:01,490 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 [2021-11-23 13:39:01,490 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6 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) [2021-11-23 13:39:01,504 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6. 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 22 states and 31 transitions. Complement of second has 4 states. [2021-11-23 13:39:01,505 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 [2021-11-23 13:39:01,505 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) [2021-11-23 13:39:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-11-23 13:39:01,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-23 13:39:01,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:39:01,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-23 13:39:01,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:39:01,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2021-11-23 13:39:01,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:39:01,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2021-11-23 13:39:01,509 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:39:01,509 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-11-23 13:39:01,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-23 13:39:01,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-23 13:39:01,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-23 13:39:01,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:39:01,510 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:39:01,510 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:39:01,510 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:39:01,511 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-23 13:39:01,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:39:01,511 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:39:01,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-23 13:39:01,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:39:01 BoogieIcfgContainer [2021-11-23 13:39:01,520 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 13:39:01,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:39:01,521 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:39:01,521 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:39:01,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:51" (3/4) ... [2021-11-23 13:39:01,526 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:39:01,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:39:01,527 INFO L158 Benchmark]: Toolchain (without parser) took 11087.08ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 74.1MB in the beginning and 96.5MB in the end (delta: -22.3MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2021-11-23 13:39:01,528 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:39:01,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.89ms. Allocated memory is still 111.1MB. Free memory was 73.9MB in the beginning and 87.5MB in the end (delta: -13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:39:01,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.75ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 86.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:39:01,530 INFO L158 Benchmark]: Boogie Preprocessor took 29.62ms. Allocated memory is still 111.1MB. Free memory was 86.3MB in the beginning and 85.4MB in the end (delta: 892.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:39:01,530 INFO L158 Benchmark]: RCFGBuilder took 356.79ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 76.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:39:01,531 INFO L158 Benchmark]: BuchiAutomizer took 10372.02ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 76.7MB in the beginning and 96.5MB in the end (delta: -19.8MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-11-23 13:39:01,531 INFO L158 Benchmark]: Witness Printer took 5.81ms. Allocated memory is still 136.3MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:39:01,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.89ms. Allocated memory is still 111.1MB. Free memory was 73.9MB in the beginning and 87.5MB in the end (delta: -13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.75ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 86.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.62ms. Allocated memory is still 111.1MB. Free memory was 86.3MB in the beginning and 85.4MB in the end (delta: 892.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 356.79ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 76.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 10372.02ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 76.7MB in the beginning and 96.5MB in the end (delta: -19.8MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 5.81ms. Allocated memory is still 136.3MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 10.2s and 11 iterations. TraceHistogramMax:2. Analysis of lassos took 8.0s. Construction of modules took 0.2s. Büchi inclusion checks took 1.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 173 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 123 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 184 IncrementalHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 137 mSDtfsCounter, 184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown 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: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-23 13:39:01,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-11-23 13:39:01,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-11-23 13:39:01,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_612ffd1c-be82-4c78-8d2a-a8dd606a6753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE