./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/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_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD --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-b2eff8b [2021-10-28 22:56:11,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:56:11,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:56:11,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:56:11,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:56:11,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:56:11,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:56:11,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:56:11,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:56:11,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:56:11,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:56:11,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:56:11,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:56:11,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:56:11,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:56:11,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:56:11,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:56:11,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:56:11,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:56:11,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:56:11,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:56:11,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:56:11,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:56:11,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:56:11,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:56:11,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:56:11,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:56:11,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:56:11,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:56:11,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:56:11,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:56:11,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:56:11,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:56:11,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:56:11,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:56:11,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:56:11,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:56:11,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:56:11,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:56:11,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:56:11,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:56:11,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 22:56:11,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:56:11,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:56:11,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:56:11,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:56:11,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:56:11,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:56:11,847 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:56:11,847 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:56:11,848 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:56:11,848 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:56:11,849 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:56:11,850 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:56:11,850 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:56:11,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:56:11,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:56:11,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:56:11,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:56:11,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:56:11,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:56:11,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:56:11,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:56:11,853 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:56:11,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:56:11,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:56:11,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:56:11,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:56:11,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:56:11,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:56:11,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:56:11,858 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:56:11,859 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_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a8c97e87f793b5839cb424b8cc5fefc3a9d4b8a56c80aade72a0ae572eae02d [2021-10-28 22:56:12,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:56:12,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:56:12,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:56:12,214 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:56:12,215 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:56:12,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2021-10-28 22:56:12,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/data/6d9d31d7b/3b3d6d21eea04261a541d9ba2c534daa/FLAG8985ff755 [2021-10-28 22:56:12,865 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:56:12,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2021-10-28 22:56:12,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/data/6d9d31d7b/3b3d6d21eea04261a541d9ba2c534daa/FLAG8985ff755 [2021-10-28 22:56:13,227 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/data/6d9d31d7b/3b3d6d21eea04261a541d9ba2c534daa [2021-10-28 22:56:13,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:56:13,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:56:13,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:56:13,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:56:13,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:56:13,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376a301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13, skipping insertion in model container [2021-10-28 22:56:13,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:56:13,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:56:13,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:56:13,488 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:56:13,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:56:13,518 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:56:13,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13 WrapperNode [2021-10-28 22:56:13,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:56:13,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:56:13,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:56:13,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:56:13,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:56:13,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:56:13,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:56:13,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:56:13,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:56:13,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:56:13,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:56:13,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:56:13,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (1/1) ... [2021-10-28 22:56:13,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:13,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:13,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:13,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:56:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:56:13,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:56:13,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:56:13,886 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 22:56:13,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:13 BoogieIcfgContainer [2021-10-28 22:56:13,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:56:13,890 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:56:13,890 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:56:13,894 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:56:13,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:56:13,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:56:13" (1/3) ... [2021-10-28 22:56:13,897 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a5b196a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:56:13, skipping insertion in model container [2021-10-28 22:56:13,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:56:13,898 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:56:13" (2/3) ... [2021-10-28 22:56:13,898 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a5b196a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:56:13, skipping insertion in model container [2021-10-28 22:56:13,898 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:56:13,899 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:13" (3/3) ... [2021-10-28 22:56:13,900 INFO L389 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2021-10-28 22:56:13,956 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:56:13,956 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:56:13,956 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:56:13,956 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:56:13,957 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:56:13,957 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:56:13,957 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:56:13,957 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:56:13,971 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) [2021-10-28 22:56:13,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:13,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:56:13,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:56:14,001 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 22:56:14,001 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:56:14,001 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:56:14,001 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) [2021-10-28 22:56:14,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:14,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:56:14,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:56:14,003 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 22:56:14,003 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:56:14,011 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 [2021-10-28 22:56:14,011 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 [2021-10-28 22:56:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:14,018 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 22:56:14,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:14,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923007197] [2021-10-28 22:56:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:14,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:14,115 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:14,137 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-10-28 22:56:14,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:14,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748640747] [2021-10-28 22:56:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:14,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:14,158 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:14,166 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-10-28 22:56:14,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:14,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780214994] [2021-10-28 22:56:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:14,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:14,178 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:14,187 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:14,281 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:56:14,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:56:14,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:56:14,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:56:14,283 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:56:14,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:14,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:56:14,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:56:14,284 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2021-10-28 22:56:14,284 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:56:14,284 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:56:14,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:14,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:14,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:14,403 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:56:14,404 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:56:14,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:14,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:14,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:14,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:56:14,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:56:14,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 22:56:14,438 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:56:14,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:56:14,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:14,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:14,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:14,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:14,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 22:56:14,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:56:14,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:56:14,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:56:14,514 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:56:14,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:14,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:14,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:14,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:14,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 22:56:14,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:56:14,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:56:14,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:14,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:14,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:14,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:14,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 22:56:14,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:56:14,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:56:14,668 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:56:14,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:14,675 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:56:14,676 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:56:14,676 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:56:14,676 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:56:14,676 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:56:14,676 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:14,676 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:56:14,677 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:56:14,677 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2021-10-28 22:56:14,677 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:56:14,677 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:56:14,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:14,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:14,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:14,790 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:56:14,795 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:56:14,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:14,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:14,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:14,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:56:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 22:56:14,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:14,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:14,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:14,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:14,837 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:14,837 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:14,853 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:14,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-28 22:56:14,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:14,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:14,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:14,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 22:56:14,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:56:14,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:14,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:14,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:14,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:14,898 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:14,898 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:14,968 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:15,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-28 22:56:15,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:15,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:15,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:15,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 22:56:15,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:56:15,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:15,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:56:15,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:15,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:15,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:15,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:56:15,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:56:15,056 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:56:15,068 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 22:56:15,068 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 22:56:15,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:15,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:15,080 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:15,094 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:56:15,094 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:56:15,095 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:56:15,095 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2021-10-28 22:56:15,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 22:56:15,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:15,142 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:56:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:15,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:56:15,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:15,241 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:56:15,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:56:15,300 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 22:56:15,301 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) [2021-10-28 22:56:15,369 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. [2021-10-28 22:56:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:56:15,372 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) [2021-10-28 22:56:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-10-28 22:56:15,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 2 letters. [2021-10-28 22:56:15,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:15,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2021-10-28 22:56:15,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:15,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-28 22:56:15,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:15,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2021-10-28 22:56:15,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:15,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 15 transitions. [2021-10-28 22:56:15,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-28 22:56:15,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 22:56:15,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2021-10-28 22:56:15,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:56:15,389 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-10-28 22:56:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2021-10-28 22:56:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-28 22:56:15,417 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) [2021-10-28 22:56:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-10-28 22:56:15,419 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 22:56:15,419 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 22:56:15,419 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:56:15,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-10-28 22:56:15,420 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:15,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:56:15,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:56:15,437 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:56:15,437 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 22:56:15,437 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 [2021-10-28 22:56:15,437 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 [2021-10-28 22:56:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 22:56:15,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:15,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627735651] [2021-10-28 22:56:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:15,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:15,445 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:15,451 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2021-10-28 22:56:15,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:15,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357759231] [2021-10-28 22:56:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:15,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:15,477 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:15,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:15,485 INFO L85 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2021-10-28 22:56:15,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:15,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041121085] [2021-10-28 22:56:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:15,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:15,495 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:15,504 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:15,544 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:56:15,544 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:56:15,544 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:56:15,544 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:56:15,545 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 22:56:15,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:15,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:56:15,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:56:15,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2021-10-28 22:56:15,545 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:56:15,545 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:56:15,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:15,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:15,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:15,618 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:56:15,618 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 22:56:15,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:15,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:15,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:15,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:56:15,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:56:15,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 22:56:15,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:56:15,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:56:15,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:15,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:15,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:15,716 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:15,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:56:15,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:56:15,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 22:56:15,753 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 22:56:15,753 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 22:56:15,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-10-28 22:56:15,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:15,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:15,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:15,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 22:56:15,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 22:56:15,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:56:15,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:15,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:15,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:15,832 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:15,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 22:56:15,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 22:56:15,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 22:56:15,943 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 22:56:15,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:15,946 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:56:15,946 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:56:15,946 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:56:15,946 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:56:15,946 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:56:15,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:15,947 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:56:15,947 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:56:15,947 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2021-10-28 22:56:15,947 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:56:15,947 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:56:15,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:15,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:15,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:56:16,026 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:56:16,026 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:56:16,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:16,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:16,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:16,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 22:56:16,045 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:56:16,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:16,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:16,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:16,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:16,076 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:16,076 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:16,089 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:16,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:16,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:16,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:16,130 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:16,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 22:56:16,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:56:16,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:16,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:16,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:16,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:16,156 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:56:16,156 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:56:16,180 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:56:16,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:16,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:16,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:16,220 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:16,230 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:56:16,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:56:16,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:56:16,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:56:16,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:56:16,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:56:16,243 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:56:16,243 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:56:16,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 22:56:16,268 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:56:16,273 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:56:16,274 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 22:56:16,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:56:16,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:56:16,276 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:56:16,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 22:56:16,281 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:56:16,282 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 22:56:16,282 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:56:16,282 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2021-10-28 22:56:16,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:16,326 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 22:56:16,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:16,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:56:16,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:16,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:56:16,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:56:16,437 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 22:56:16,438 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) [2021-10-28 22:56:16,494 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. [2021-10-28 22:56:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:56:16,504 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) [2021-10-28 22:56:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 22:56:16,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2021-10-28 22:56:16,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:16,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-28 22:56:16,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:16,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2021-10-28 22:56:16,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:56:16,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. [2021-10-28 22:56:16,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:16,514 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 23 states and 35 transitions. [2021-10-28 22:56:16,515 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:56:16,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 22:56:16,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 35 transitions. [2021-10-28 22:56:16,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 22:56:16,516 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-10-28 22:56:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 35 transitions. [2021-10-28 22:56:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-28 22:56:16,522 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) [2021-10-28 22:56:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2021-10-28 22:56:16,524 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2021-10-28 22:56:16,524 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2021-10-28 22:56:16,525 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:56:16,525 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 34 transitions. [2021-10-28 22:56:16,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 22:56:16,532 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:56:16,532 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:56:16,532 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 22:56:16,533 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 22:56:16,533 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 [2021-10-28 22:56:16,533 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 [2021-10-28 22:56:16,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-28 22:56:16,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:16,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874465214] [2021-10-28 22:56:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:16,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:16,553 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:16,559 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:16,560 INFO L85 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2021-10-28 22:56:16,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:16,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864829083] [2021-10-28 22:56:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:16,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:56:16,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:56:16,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864829083] [2021-10-28 22:56:16,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864829083] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:56:16,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:56:16,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:56:16,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466810971] [2021-10-28 22:56:16,615 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:56:16,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:16,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:56:16,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:56:16,621 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) [2021-10-28 22:56:16,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:16,646 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2021-10-28 22:56:16,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:56:16,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2021-10-28 22:56:16,648 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:56:16,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-10-28 22:56:16,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:56:16,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:56:16,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:56:16,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:56:16,649 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:16,650 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:16,650 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:16,650 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:56:16,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:56:16,650 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:56:16,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 22:56:16,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:56:16 BoogieIcfgContainer [2021-10-28 22:56:16,658 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:56:16,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:56:16,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:56:16,659 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:56:16,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:56:13" (3/4) ... [2021-10-28 22:56:16,663 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:56:16,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:56:16,666 INFO L168 Benchmark]: Toolchain (without parser) took 3430.61 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 57.8 MB in the beginning and 53.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:16,666 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 90.2 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:16,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.46 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 57.6 MB in the beginning and 94.9 MB in the end (delta: -37.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:16,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.18 ms. Allocated memory is still 117.4 MB. Free memory was 94.9 MB in the beginning and 93.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:16,669 INFO L168 Benchmark]: Boogie Preprocessor took 21.91 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 92.8 MB in the end (delta: 804.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:16,670 INFO L168 Benchmark]: RCFGBuilder took 307.34 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 85.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:16,671 INFO L168 Benchmark]: BuchiAutomizer took 2768.00 ms. Allocated memory is still 117.4 MB. Free memory was 84.8 MB in the beginning and 53.8 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:16,671 INFO L168 Benchmark]: Witness Printer took 5.09 ms. Allocated memory is still 117.4 MB. Free memory was 53.8 MB in the beginning and 53.2 MB in the end (delta: 606.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:16,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 90.2 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.46 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 57.6 MB in the beginning and 94.9 MB in the end (delta: -37.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.18 ms. Allocated memory is still 117.4 MB. Free memory was 94.9 MB in the beginning and 93.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.91 ms. Allocated memory is still 117.4 MB. Free memory was 93.6 MB in the beginning and 92.8 MB in the end (delta: 804.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 307.34 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 85.1 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2768.00 ms. Allocated memory is still 117.4 MB. Free memory was 84.8 MB in the beginning and 53.8 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.09 ms. Allocated memory is still 117.4 MB. Free memory was 53.8 MB in the beginning and 53.2 MB in the end (delta: 606.7 kB). 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 2.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. 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 0.0s 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, 0.0s 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: 56ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 22:56:16,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:16,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:17,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_788ede7c-79d8-4162-8d54-4e5ac0a20633/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...