./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC --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 413fc6a41e04b7b618ff9ab274418b4a8dcf040d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:27:20,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:27:20,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:27:20,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:27:20,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:27:20,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:27:20,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:27:20,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:27:20,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:27:20,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:27:20,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:27:20,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:27:20,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:27:20,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:27:20,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:27:20,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:27:20,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:27:20,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:27:20,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:27:20,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:27:20,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:27:20,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:27:20,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:27:20,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:27:20,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:27:20,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:27:20,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:27:20,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:27:20,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:27:20,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:27:20,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:27:20,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:27:20,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:27:20,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:27:20,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:27:20,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:27:20,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:27:20,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:27:20,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:27:20,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:27:20,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:27:20,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-11 00:27:20,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:27:20,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:27:20,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:27:20,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:27:20,751 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:27:20,751 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:27:20,752 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:27:20,752 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:27:20,752 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:27:20,753 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:27:20,753 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:27:20,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:27:20,753 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:27:20,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:27:20,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:27:20,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:27:20,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:27:20,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:27:20,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:27:20,755 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:27:20,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:27:20,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:27:20,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:27:20,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:27:20,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:27:20,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:27:20,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:27:20,759 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:27:20,759 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_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 413fc6a41e04b7b618ff9ab274418b4a8dcf040d [2021-10-11 00:27:20,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:27:21,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:27:21,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:27:21,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:27:21,030 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:27:21,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2021-10-11 00:27:21,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/data/5bad71480/e4d4c585c0944852b39ef35a56924db6/FLAGb216ace89 [2021-10-11 00:27:21,587 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:27:21,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2021-10-11 00:27:21,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/data/5bad71480/e4d4c585c0944852b39ef35a56924db6/FLAGb216ace89 [2021-10-11 00:27:21,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/data/5bad71480/e4d4c585c0944852b39ef35a56924db6 [2021-10-11 00:27:21,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:27:21,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:27:21,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:21,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:27:21,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:27:21,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e14fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:21, skipping insertion in model container [2021-10-11 00:27:21,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:27:21" (1/1) ... [2021-10-11 00:27:21,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:27:21,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:27:22,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:22,120 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:27:22,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:27:22,144 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:27:22,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22 WrapperNode [2021-10-11 00:27:22,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:27:22,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:22,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:27:22,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:27:22,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:27:22,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:27:22,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:27:22,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:27:22,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... [2021-10-11 00:27:22,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:27:22,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:27:22,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:27:22,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:27:22,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:27:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:27:22,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:27:22,448 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:27:22,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:22 BoogieIcfgContainer [2021-10-11 00:27:22,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:27:22,452 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:27:22,452 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:27:22,457 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:27:22,457 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:27:22,459 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:27:21" (1/3) ... [2021-10-11 00:27:22,460 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c4c7c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:27:22, skipping insertion in model container [2021-10-11 00:27:22,460 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:27:22,460 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:27:22" (2/3) ... [2021-10-11 00:27:22,461 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c4c7c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:27:22, skipping insertion in model container [2021-10-11 00:27:22,461 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:27:22,461 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:22" (3/3) ... [2021-10-11 00:27:22,464 INFO L389 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b.c [2021-10-11 00:27:22,526 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:27:22,526 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:27:22,526 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:27:22,527 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:27:22,527 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:27:22,527 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:27:22,527 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:27:22,527 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:27:22,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2021-10-11 00:27:22,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:27:22,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:22,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:22,565 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:27:22,565 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:27:22,565 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:27:22,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2021-10-11 00:27:22,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:27:22,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:22,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:22,567 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:27:22,585 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:27:22,595 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~M~0 > 0; 7#L19-2true [2021-10-11 00:27:22,596 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 != main_~M~0); 9#L19true assume main_~x~0 > main_~M~0;main_~x~0 := 0; 7#L19-2true [2021-10-11 00:27:22,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:22,602 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-11 00:27:22,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:22,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110099975] [2021-10-11 00:27:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:22,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:22,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:22,712 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:22,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:22,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2021-10-11 00:27:22,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:22,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268106996] [2021-10-11 00:27:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:22,724 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:22,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:22,730 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:22,732 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2021-10-11 00:27:22,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:22,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158987612] [2021-10-11 00:27:22,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:22,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:22,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:22,747 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:22,827 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:27:22,828 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:27:22,828 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:27:22,828 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:27:22,828 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:27:22,829 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:22,829 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:27:22,829 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:27:22,829 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2021-10-11 00:27:22,829 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:27:22,829 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:27:22,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:22,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:22,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:22,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:22,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:22,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:22,952 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:27:22,952 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:22,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:27:22,987 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:23,015 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:27:23,015 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:23,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:27:23,042 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:23,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:27:23,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:27:23,171 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:27:23,172 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:27:23,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:27:23,172 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:27:23,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:27:23,173 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:27:23,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:23,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:27:23,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:27:23,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2021-10-11 00:27:23,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:27:23,174 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:27:23,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:23,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:23,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:23,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:23,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:23,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:23,263 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:27:23,267 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:23,280 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:27:23,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:23,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:23,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:23,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:23,289 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:27:23,289 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:27:23,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:23,348 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:27:23,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:23,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:23,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:23,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:23,357 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:27:23,358 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:23,376 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:27:23,399 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-11 00:27:23,399 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:23,413 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:23,440 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-11 00:27:23,440 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:27:23,441 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~M~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~M~0 >= 0] [2021-10-11 00:27:23,471 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-11 00:27:23,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:23,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:27:23,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:23,615 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:27:23,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:23,641 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:27:23,642 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2021-10-11 00:27:23,718 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2021-10-11 00:27:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:27:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:27:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-11 00:27:23,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-11 00:27:23,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:23,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-11 00:27:23,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:23,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-11 00:27:23,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:23,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2021-10-11 00:27:23,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:27:23,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2021-10-11 00:27:23,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-11 00:27:23,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-11 00:27:23,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-10-11 00:27:23,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:27:23,740 INFO L692 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-11 00:27:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-10-11 00:27:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 00:27:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 00:27:23,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-10-11 00:27:23,766 INFO L715 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-11 00:27:23,766 INFO L595 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-11 00:27:23,766 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:27:23,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-10-11 00:27:23,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:27:23,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:23,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:23,768 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-11 00:27:23,768 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:27:23,769 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L17 assume main_~M~0 > 0; 88#L19-2 assume !!(main_~x~0 != main_~M~0); 87#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 83#L19-2 [2021-10-11 00:27:23,769 INFO L796 eck$LassoCheckResult]: Loop: 83#L19-2 assume !!(main_~x~0 != main_~M~0); 84#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 83#L19-2 [2021-10-11 00:27:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:23,770 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2021-10-11 00:27:23,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:23,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681500485] [2021-10-11 00:27:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:23,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:23,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:23,798 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:23,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2021-10-11 00:27:23,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:23,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685302229] [2021-10-11 00:27:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:23,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:23,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:23,825 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:23,828 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2021-10-11 00:27:23,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:23,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272093481] [2021-10-11 00:27:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:23,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272093481] [2021-10-11 00:27:23,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254763220] [2021-10-11 00:27:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:27:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:23,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:27:23,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:27:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:23,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:27:23,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:27:23,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652121769] [2021-10-11 00:27:23,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:27:23,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:27:23,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:27:23,991 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2021-10-11 00:27:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:27:24,018 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2021-10-11 00:27:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:27:24,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 10 transitions. [2021-10-11 00:27:24,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:27:24,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 10 transitions. [2021-10-11 00:27:24,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-11 00:27:24,023 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-11 00:27:24,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2021-10-11 00:27:24,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:27:24,026 INFO L692 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-11 00:27:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2021-10-11 00:27:24,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-10-11 00:27:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 00:27:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-10-11 00:27:24,030 INFO L715 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-10-11 00:27:24,031 INFO L595 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-10-11 00:27:24,031 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-11 00:27:24,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-10-11 00:27:24,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:27:24,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:24,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:24,032 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-11 00:27:24,032 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:27:24,032 INFO L794 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 124#L17 assume main_~M~0 > 0; 125#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2021-10-11 00:27:24,032 INFO L796 eck$LassoCheckResult]: Loop: 127#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 126#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2021-10-11 00:27:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:24,033 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2021-10-11 00:27:24,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:24,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067524587] [2021-10-11 00:27:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:24,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:24,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:24,055 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:24,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2021-10-11 00:27:24,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:24,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872450077] [2021-10-11 00:27:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:24,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:24,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:24,067 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:24,067 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2021-10-11 00:27:24,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:24,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829213542] [2021-10-11 00:27:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:24,072 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:24,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:24,077 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:24,090 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:27:24,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:27:24,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:27:24,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:27:24,090 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:27:24,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:24,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:27:24,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:27:24,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2021-10-11 00:27:24,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:27:24,091 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:27:24,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:24,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:24,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:24,166 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:27:24,166 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:24,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:27:24,173 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:24,186 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:27:24,186 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:24,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:27:24,225 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:24,249 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:27:24,249 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:24,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:27:24,285 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:24,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:27:24,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:27:26,414 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:27:26,416 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:27:26,417 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:27:26,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:27:26,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:27:26,417 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:27:26,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:26,417 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:27:26,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:27:26,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2021-10-11 00:27:26,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:27:26,417 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:27:26,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:26,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:26,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:26,502 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:27:26,502 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:26,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:27:26,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:26,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:26,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:26,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:26,515 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:27:26,515 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:27:26,530 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:26,565 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:27:26,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:26,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:26,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:27:26,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:26,570 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:27:26,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:27:26,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:26,636 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:26,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:26,638 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:27:26,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:26,638 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-11 00:27:26,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:26,640 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-11 00:27:26,641 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:27:26,664 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:27:26,668 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:27:26,668 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:26,680 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:27:26,680 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:26,680 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:27:26,680 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~M~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~M~0 + 1 Supporting invariants [] [2021-10-11 00:27:26,711 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:27:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:26,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:27:26,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:26,742 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:27:26,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:26,782 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 [2021-10-11 00:27:26,782 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2021-10-11 00:27:26,795 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 5 states. [2021-10-11 00:27:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:27:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:27:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-10-11 00:27:26,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-10-11 00:27:26,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:26,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-11 00:27:26,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:26,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-11 00:27:26,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:26,797 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2021-10-11 00:27:26,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:27:26,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2021-10-11 00:27:26,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-11 00:27:26,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-11 00:27:26,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-10-11 00:27:26,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:27:26,801 INFO L692 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-11 00:27:26,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-10-11 00:27:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-10-11 00:27:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 00:27:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-10-11 00:27:26,803 INFO L715 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-11 00:27:26,803 INFO L595 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-11 00:27:26,803 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-11 00:27:26,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-10-11 00:27:26,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-11 00:27:26,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:27:26,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:27:26,808 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-10-11 00:27:26,808 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-11 00:27:26,808 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L17 assume main_~M~0 > 0; 180#L19-2 assume !!(main_~x~0 != main_~M~0); 181#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 182#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2021-10-11 00:27:26,808 INFO L796 eck$LassoCheckResult]: Loop: 183#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 184#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2021-10-11 00:27:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:26,809 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2021-10-11 00:27:26,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:26,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386173870] [2021-10-11 00:27:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:26,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:26,830 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:26,832 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:26,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2021-10-11 00:27:26,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:26,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528824993] [2021-10-11 00:27:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:26,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:26,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:26,847 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:26,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2021-10-11 00:27:26,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:27:26,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266255503] [2021-10-11 00:27:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:27:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:26,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:27:26,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:27:26,867 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:27:26,880 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:27:26,881 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:27:26,881 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:27:26,881 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:27:26,881 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:27:26,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:26,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:27:26,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:27:26,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2021-10-11 00:27:26,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:27:26,881 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:27:26,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:26,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:26,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:26,955 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:27:26,955 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:26,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:27:26,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:27:26,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:27:26,981 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:27,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:27:27,021 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:27,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:27:27,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:27:29,093 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:27:29,095 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:27:29,095 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:27:29,095 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:27:29,095 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:27:29,095 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:27:29,095 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:29,095 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:27:29,095 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:27:29,095 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2021-10-11 00:27:29,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:27:29,096 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:27:29,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:29,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:29,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:27:29,183 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:27:29,183 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:29,197 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:27:29,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:27:29,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:27:29,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:27:29,199 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-11 00:27:29,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:27:29,201 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-11 00:27:29,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:29,224 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:27:29,228 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:27:29,228 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e59b662-1801-45de-b946-bc8f4220eaf9/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:27:29,231 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:27:29,231 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:27:29,231 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:27:29,231 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~M~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:27:29,266 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:27:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:27:29,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:29,296 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:27:29,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:29,331 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 [2021-10-11 00:27:29,331 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2021-10-11 00:27:29,339 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2021-10-11 00:27:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-10-11 00:27:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:27:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-10-11 00:27:29,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-11 00:27:29,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:29,341 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:27:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:29,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:27:29,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:29,370 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:27:29,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:29,399 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:27:29,400 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2021-10-11 00:27:29,405 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2021-10-11 00:27:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-10-11 00:27:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:27:29,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-10-11 00:27:29,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-11 00:27:29,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:29,407 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:27:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:27:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:29,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:27:29,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:27:29,433 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:27:29,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:27:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:27:29,474 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:27:29,474 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2021-10-11 00:27:29,504 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 9 states and 10 transitions. Complement of second has 4 states. [2021-10-11 00:27:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:27:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:27:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-11 00:27:29,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-11 00:27:29,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:29,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2021-10-11 00:27:29,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:29,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-11 00:27:29,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:27:29,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-10-11 00:27:29,509 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:27:29,509 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2021-10-11 00:27:29,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-11 00:27:29,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-11 00:27:29,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-11 00:27:29,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:27:29,510 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:27:29,510 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:27:29,510 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:27:29,510 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-11 00:27:29,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:27:29,510 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:27:29,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-11 00:27:29,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:27:29 BoogieIcfgContainer [2021-10-11 00:27:29,516 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:27:29,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:27:29,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:27:29,516 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:27:29,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:27:22" (3/4) ... [2021-10-11 00:27:29,521 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:27:29,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:27:29,574 INFO L168 Benchmark]: Toolchain (without parser) took 7560.93 ms. Allocated memory was 100.7 MB in the beginning and 142.6 MB in the end (delta: 41.9 MB). Free memory was 73.4 MB in the beginning and 115.3 MB in the end (delta: -41.8 MB). Peak memory consumption was 317.2 kB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,575 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory is still 73.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:29,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.94 ms. Allocated memory is still 100.7 MB. Free memory was 73.2 MB in the beginning and 64.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 100.7 MB. Free memory was 64.8 MB in the beginning and 63.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:29,577 INFO L168 Benchmark]: Boogie Preprocessor took 16.18 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 62.5 MB in the end (delta: 906.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,578 INFO L168 Benchmark]: RCFGBuilder took 261.35 ms. Allocated memory is still 100.7 MB. Free memory was 62.5 MB in the beginning and 54.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:27:29,580 INFO L168 Benchmark]: BuchiAutomizer took 7063.75 ms. Allocated memory was 100.7 MB in the beginning and 142.6 MB in the end (delta: 41.9 MB). Free memory was 53.9 MB in the beginning and 115.3 MB in the end (delta: -61.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:29,581 INFO L168 Benchmark]: Witness Printer took 4.94 ms. Allocated memory is still 142.6 MB. Free memory is still 115.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:27:29,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory is still 73.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 181.94 ms. Allocated memory is still 100.7 MB. Free memory was 73.2 MB in the beginning and 64.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 100.7 MB. Free memory was 64.8 MB in the beginning and 63.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.18 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 62.5 MB in the end (delta: 906.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 261.35 ms. Allocated memory is still 100.7 MB. Free memory was 62.5 MB in the beginning and 54.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7063.75 ms. Allocated memory was 100.7 MB in the beginning and 142.6 MB in the end (delta: 41.9 MB). Free memory was 53.9 MB in the beginning and 115.3 MB in the end (delta: -61.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.94 ms. Allocated memory is still 142.6 MB. Free memory is still 115.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * M + x and consists of 4 locations. One deterministic module has affine ranking function -2 * x + 2 * M + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * M + -2 * x + 1 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 26 SDtfs, 23 SDslu, 3 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf94 smp100 dnf143 smp85 tf104 neg95 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...