./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be --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 2a8c97e87f793b5839cb424b8cc5fefc3a9d4b8a56c80aade72a0ae572eae02d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:50:11,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:50:11,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:50:11,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:50:11,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:50:11,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:50:11,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:50:11,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:50:11,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:50:11,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:50:11,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:50:11,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:50:11,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:50:11,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:50:11,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:50:11,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:50:11,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:50:11,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:50:11,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:50:11,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:50:11,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:50:11,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:50:11,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:50:11,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:50:11,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:50:11,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:50:11,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:50:11,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:50:11,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:50:11,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:50:11,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:50:11,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:50:11,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:50:11,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:50:11,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:50:11,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:50:11,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:50:11,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:50:11,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:50:11,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:50:11,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:50:11,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 19:50:11,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:50:11,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:50:11,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:50:11,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:50:11,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:50:11,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:50:11,735 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:50:11,735 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:50:11,735 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:50:11,735 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:50:11,736 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:50:11,737 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:50:11,737 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:50:11,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:50:11,738 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:50:11,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:50:11,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:50:11,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:50:11,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:50:11,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:50:11,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:50:11,739 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:50:11,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:50:11,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:50:11,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:50:11,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:50:11,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:50:11,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:50:11,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:50:11,744 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:50:11,744 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_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a8c97e87f793b5839cb424b8cc5fefc3a9d4b8a56c80aade72a0ae572eae02d [2021-10-21 19:50:12,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:50:12,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:50:12,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:50:12,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:50:12,133 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:50:12,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2021-10-21 19:50:12,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/data/ab8f1bfaa/da03ac0f4c6943da951227e47caad360/FLAG9d40c8f55 [2021-10-21 19:50:12,661 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:50:12,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2021-10-21 19:50:12,674 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/data/ab8f1bfaa/da03ac0f4c6943da951227e47caad360/FLAG9d40c8f55 [2021-10-21 19:50:13,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/data/ab8f1bfaa/da03ac0f4c6943da951227e47caad360 [2021-10-21 19:50:13,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:50:13,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:50:13,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:50:13,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:50:13,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:50:13,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9733fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13, skipping insertion in model container [2021-10-21 19:50:13,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:50:13,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:50:13,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:50:13,325 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:50:13,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:50:13,397 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:50:13,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13 WrapperNode [2021-10-21 19:50:13,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:50:13,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:50:13,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:50:13,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:50:13,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:50:13,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:50:13,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:50:13,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:50:13,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:50:13,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:50:13,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:50:13,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:50:13,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (1/1) ... [2021-10-21 19:50:13,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:13,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:13,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:13,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:50:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:50:13,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:50:13,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:50:13,741 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:50:13,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:50:13 BoogieIcfgContainer [2021-10-21 19:50:13,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:50:13,744 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:50:13,744 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:50:13,748 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:50:13,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:50:13,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:50:13" (1/3) ... [2021-10-21 19:50:13,751 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a2801ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:50:13, skipping insertion in model container [2021-10-21 19:50:13,751 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:50:13,751 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:50:13" (2/3) ... [2021-10-21 19:50:13,752 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a2801ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:50:13, skipping insertion in model container [2021-10-21 19:50:13,752 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:50:13,752 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:50:13" (3/3) ... [2021-10-21 19:50:13,754 INFO L389 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2021-10-21 19:50:13,805 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:50:13,806 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:50:13,806 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:50:13,806 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:50:13,806 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:50:13,807 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:50:13,807 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:50:13,807 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:50:13,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:50:13,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:50:13,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:50:13,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:50:13,848 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:50:13,848 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:50:13,848 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:50:13,849 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:50:13,850 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:50:13,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:50:13,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:50:13,851 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:50:13,851 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:50:13,858 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L21-2true [2021-10-21 19:50:13,858 INFO L793 eck$LassoCheckResult]: Loop: 8#L21-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 5#L18true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1; 8#L21-2true [2021-10-21 19:50:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:13,865 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-21 19:50:13,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:50:13,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712349188] [2021-10-21 19:50:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:50:13,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:50:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:13,960 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:50:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:13,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:50:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:13,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-10-21 19:50:13,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:50:13,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488798789] [2021-10-21 19:50:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:50:13,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:50:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:13,997 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:50:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:14,004 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:50:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:14,006 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-10-21 19:50:14,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:50:14,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534855606] [2021-10-21 19:50:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:50:14,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:50:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:14,016 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:50:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:14,022 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:50:14,139 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:50:14,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:50:14,139 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:50:14,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:50:14,140 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:50:14,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:50:14,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:50:14,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2021-10-21 19:50:14,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:50:14,141 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:50:14,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:14,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:14,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:14,245 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:50:14,245 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:50:14,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:14,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:14,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:50:14,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:50:14,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:50:14,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:50:14,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:50:14,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-21 19:50:14,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:14,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:14,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:50:14,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:50:14,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:50:14,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:50:14,408 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:50:14,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:14,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:14,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:14,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:50:14,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:50:14,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:50:14,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:14,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:14,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:14,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:50:14,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:50:14,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:50:14,564 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:50:14,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:14,570 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:50:14,571 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:50:14,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:50:14,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:50:14,571 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:50:14,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:50:14,571 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:50:14,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2021-10-21 19:50:14,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:50:14,572 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:50:14,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:14,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:14,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:14,658 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:50:14,664 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:50:14,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:14,683 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:14,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:50:14,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:50:14,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:50:14,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:50:14,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:50:14,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:50:14,708 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:50:14,708 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:50:14,731 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:50:14,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:14,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:14,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:14,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:50:14,772 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:50:14,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:50:14,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:50:14,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:50:14,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:50:14,787 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:50:14,787 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:50:14,802 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:50:14,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:14,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:14,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:14,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:50:14,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:50:14,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:50:14,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:50:14,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:50:14,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:50:14,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:50:14,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:50:14,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:50:14,895 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:50:14,899 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 19:50:14,899 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:50:14,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:14,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:14,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:14,923 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:50:14,923 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:50:14,924 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:50:14,924 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2021-10-21 19:50:14,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:50:14,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:14,959 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:50:15,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:50:15,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:50:15,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:50:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:50:15,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:50:15,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:50:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:50:15,080 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 19:50:15,082 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:50:15,157 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 30 states and 39 transitions. Complement of second has 7 states. [2021-10-21 19:50:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:50:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:50:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-10-21 19:50:15,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 2 letters. [2021-10-21 19:50:15,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:50:15,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2021-10-21 19:50:15,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:50:15,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-21 19:50:15,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:50:15,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2021-10-21 19:50:15,167 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:50:15,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 15 transitions. [2021-10-21 19:50:15,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-21 19:50:15,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-21 19:50:15,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2021-10-21 19:50:15,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:50:15,189 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-10-21 19:50:15,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2021-10-21 19:50:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-21 19:50:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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) [2021-10-21 19:50:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-10-21 19:50:15,228 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-21 19:50:15,228 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-21 19:50:15,229 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:50:15,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-10-21 19:50:15,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:50:15,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:50:15,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:50:15,232 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:50:15,232 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:50:15,234 INFO L791 eck$LassoCheckResult]: Stem: 79#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 80#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 74#L18 [2021-10-21 19:50:15,234 INFO L793 eck$LassoCheckResult]: Loop: 74#L18 assume !(main_~q~0 < main_~p~0); 75#L21 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1; 81#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 74#L18 [2021-10-21 19:50:15,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:15,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-21 19:50:15,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:50:15,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588584430] [2021-10-21 19:50:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:50:15,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:50:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:15,249 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:50:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:15,263 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:50:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:15,264 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2021-10-21 19:50:15,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:50:15,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379450107] [2021-10-21 19:50:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:50:15,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:50:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:15,271 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:50:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:15,277 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:50:15,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:15,278 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2021-10-21 19:50:15,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:50:15,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843534266] [2021-10-21 19:50:15,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:50:15,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:50:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:15,299 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:50:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:15,309 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:50:15,342 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:50:15,343 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:50:15,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:50:15,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:50:15,343 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:50:15,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:15,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:50:15,344 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:50:15,344 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2021-10-21 19:50:15,344 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:50:15,344 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:50:15,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:15,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:15,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:15,437 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:50:15,437 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:50:15,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:15,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:15,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:50:15,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:50:15,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:50:15,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:50:15,469 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:50:15,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-21 19:50:15,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:15,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:15,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:50:15,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:50:15,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:50:15,523 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:50:15,523 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:50:15,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:15,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:15,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:15,567 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:15,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:50:15,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:50:15,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:50:15,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:15,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:15,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:15,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:15,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:50:15,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:50:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:50:15,770 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:50:15,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:15,773 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:50:15,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:50:15,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:50:15,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:50:15,774 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:50:15,774 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:15,774 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:50:15,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:50:15,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2021-10-21 19:50:15,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:50:15,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:50:15,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:15,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:15,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:50:15,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:50:15,881 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:50:15,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:15,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:15,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:15,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:15,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:50:15,923 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:50:15,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:50:15,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:50:15,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:50:15,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:50:15,937 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:50:15,937 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:50:15,955 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:50:15,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:15,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:15,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:15,999 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:16,005 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:50:16,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:50:16,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:50:16,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:50:16,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:50:16,019 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:50:16,019 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:50:16,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:50:16,043 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:50:16,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:16,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:16,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:16,083 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:16,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:50:16,086 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:50:16,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:50:16,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:50:16,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:50:16,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:50:16,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:50:16,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:50:16,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:50:16,109 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:50:16,113 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:50:16,113 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:50:16,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:50:16,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:50:16,114 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:50:16,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:50:16,116 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:50:16,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:50:16,116 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:50:16,116 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2021-10-21 19:50:16,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:16,137 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:50:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:50:16,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:50:16,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:50:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:50:16,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:50:16,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:50:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:50:16,242 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 19:50:16,243 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 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) [2021-10-21 19:50:16,289 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. 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 25 states and 38 transitions. Complement of second has 6 states. [2021-10-21 19:50:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:50:16,300 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) [2021-10-21 19:50:16,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-21 19:50:16,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2021-10-21 19:50:16,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:50:16,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-21 19:50:16,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:50:16,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2021-10-21 19:50:16,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:50:16,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. [2021-10-21 19:50:16,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:50:16,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 23 states and 35 transitions. [2021-10-21 19:50:16,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-21 19:50:16,305 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-21 19:50:16,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 35 transitions. [2021-10-21 19:50:16,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:50:16,305 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-10-21 19:50:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 35 transitions. [2021-10-21 19:50:16,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-21 19:50:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:50:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2021-10-21 19:50:16,310 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2021-10-21 19:50:16,310 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2021-10-21 19:50:16,310 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:50:16,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 34 transitions. [2021-10-21 19:50:16,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:50:16,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:50:16,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:50:16,312 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 19:50:16,312 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:50:16,312 INFO L791 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 164#L18 assume !(main_~q~0 < main_~p~0); 153#L21 [2021-10-21 19:50:16,312 INFO L793 eck$LassoCheckResult]: Loop: 153#L21 assume !(main_~p~0 < main_~q~0); 154#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 156#L18 assume !(main_~q~0 < main_~p~0); 153#L21 [2021-10-21 19:50:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-21 19:50:16,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:50:16,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332323917] [2021-10-21 19:50:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:50:16,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:50:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:16,321 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:50:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:50:16,326 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:50:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:50:16,326 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2021-10-21 19:50:16,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:50:16,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278084972] [2021-10-21 19:50:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:50:16,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:50:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:50:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:50:16,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:50:16,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278084972] [2021-10-21 19:50:16,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278084972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:50:16,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:50:16,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:50:16,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74955508] [2021-10-21 19:50:16,383 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:50:16,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:50:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:50:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:50:16,391 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. cyclomatic complexity: 16 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:50:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:50:16,411 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2021-10-21 19:50:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:50:16,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2021-10-21 19:50:16,414 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:50:16,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-10-21 19:50:16,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:50:16,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:50:16,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:50:16,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:50:16,415 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:50:16,415 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:50:16,415 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:50:16,415 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:50:16,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:50:16,416 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:50:16,416 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:50:16,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:50:16 BoogieIcfgContainer [2021-10-21 19:50:16,423 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:50:16,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:50:16,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:50:16,424 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:50:16,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:50:13" (3/4) ... [2021-10-21 19:50:16,428 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:50:16,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:50:16,430 INFO L168 Benchmark]: Toolchain (without parser) took 3365.94 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 56.5 MB in the beginning and 80.9 MB in the end (delta: -24.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:50:16,430 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory is still 72.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:50:16,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.11 ms. Allocated memory is still 98.6 MB. Free memory was 56.3 MB in the beginning and 74.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:50:16,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.29 ms. Allocated memory is still 98.6 MB. Free memory was 74.0 MB in the beginning and 72.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:50:16,432 INFO L168 Benchmark]: Boogie Preprocessor took 21.88 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 72.0 MB in the end (delta: 904.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:50:16,433 INFO L168 Benchmark]: RCFGBuilder took 277.87 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 64.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:50:16,434 INFO L168 Benchmark]: BuchiAutomizer took 2678.66 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 64.1 MB in the beginning and 80.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:50:16,434 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 123.7 MB. Free memory is still 80.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:50:16,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory is still 72.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.11 ms. Allocated memory is still 98.6 MB. Free memory was 56.3 MB in the beginning and 74.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.29 ms. Allocated memory is still 98.6 MB. Free memory was 74.0 MB in the beginning and 72.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.88 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 72.0 MB in the end (delta: 904.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 277.87 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 64.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2678.66 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 64.1 MB in the beginning and 80.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.44 ms. Allocated memory is still 123.7 MB. Free memory is still 80.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 17.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 9 SDs, 0 SdLazy, 38 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36.6ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 65ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:50:16,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:50:16,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87aaafc6-9962-4cea-b6de-c4f7e747b73f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...