./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer --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 0455ba49274114922cfe1b7739d9cb0a89e6c868 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:47:47,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:47:47,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:47:47,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:47:47,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:47:47,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:47:47,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:47:47,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:47:47,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:47:47,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:47:47,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:47:47,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:47:47,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:47:47,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:47:47,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:47:47,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:47:47,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:47:47,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:47:47,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:47:48,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:47:48,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:47:48,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:47:48,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:47:48,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:47:48,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:47:48,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:47:48,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:47:48,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:47:48,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:47:48,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:47:48,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:47:48,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:47:48,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:47:48,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:47:48,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:47:48,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:47:48,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:47:48,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:47:48,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:47:48,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:47:48,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:47:48,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 22:47:48,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:47:48,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:47:48,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:47:48,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:47:48,077 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:47:48,078 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:47:48,078 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:47:48,078 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:47:48,078 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:47:48,079 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:47:48,080 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:47:48,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:47:48,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:47:48,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:47:48,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:47:48,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:47:48,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:47:48,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:47:48,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:47:48,097 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:47:48,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:47:48,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:47:48,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:47:48,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:47:48,098 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:47:48,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:47:48,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:47:48,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:47:48,099 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:47:48,103 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:47:48,103 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-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2020-11-29 22:47:48,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:47:48,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:47:48,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:47:48,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:47:48,462 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:47:48,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2020-11-29 22:47:48,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/data/66f60c675/795492d20ce74dd4a9da6c82f4353046/FLAG2ce6bfacc [2020-11-29 22:47:48,994 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:47:48,995 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2020-11-29 22:47:49,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/data/66f60c675/795492d20ce74dd4a9da6c82f4353046/FLAG2ce6bfacc [2020-11-29 22:47:49,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/data/66f60c675/795492d20ce74dd4a9da6c82f4353046 [2020-11-29 22:47:49,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:47:49,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:47:49,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:47:49,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:47:49,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:47:49,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461d185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49, skipping insertion in model container [2020-11-29 22:47:49,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:47:49,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:47:49,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:47:49,625 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:47:49,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:47:49,651 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:47:49,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49 WrapperNode [2020-11-29 22:47:49,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:47:49,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:47:49,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:47:49,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:47:49,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:47:49,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:47:49,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:47:49,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:47:49,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... [2020-11-29 22:47:49,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:47:49,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:47:49,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:47:49,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:47:49,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/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 [2020-11-29 22:47:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:47:49,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:47:49,944 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:47:49,944 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 22:47:49,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:47:49 BoogieIcfgContainer [2020-11-29 22:47:49,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:47:49,947 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:47:49,947 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:47:49,951 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:47:49,952 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:47:49,952 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:47:49" (1/3) ... [2020-11-29 22:47:49,953 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11914bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:47:49, skipping insertion in model container [2020-11-29 22:47:49,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:47:49,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:47:49" (2/3) ... [2020-11-29 22:47:49,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11914bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:47:49, skipping insertion in model container [2020-11-29 22:47:49,955 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:47:49,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:47:49" (3/3) ... [2020-11-29 22:47:49,956 INFO L373 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2020-11-29 22:47:50,007 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:47:50,008 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:47:50,008 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:47:50,008 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:47:50,008 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:47:50,008 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:47:50,008 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:47:50,008 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:47:50,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 22:47:50,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:47:50,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:47:50,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:47:50,042 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:47:50,042 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:47:50,043 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:47:50,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 22:47:50,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:47:50,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:47:50,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:47:50,045 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:47:50,045 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:47:50,052 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 6#L18-2true [2020-11-29 22:47:50,053 INFO L796 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~y~0 >= 0); 9#L19true assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 7#L19-2true main_~x~0 := 1 + main_~x~0; 6#L18-2true [2020-11-29 22:47:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:50,059 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 22:47:50,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:50,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549434722] [2020-11-29 22:47:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:50,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:50,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:50,177 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:47:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:50,186 INFO L82 PathProgramCache]: Analyzing trace with hash 39821, now seen corresponding path program 1 times [2020-11-29 22:47:50,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:50,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719282410] [2020-11-29 22:47:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:50,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:50,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:50,206 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:47:50,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:50,208 INFO L82 PathProgramCache]: Analyzing trace with hash 963342, now seen corresponding path program 1 times [2020-11-29 22:47:50,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:50,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728947897] [2020-11-29 22:47:50,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:50,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:50,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:50,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:47:50,478 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-11-29 22:47:50,491 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:47:50,493 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:47:50,493 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:47:50,493 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:47:50,493 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:47:50,494 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:50,494 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:47:50,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:47:50,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2020-11-29 22:47:50,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:47:50,494 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:47:50,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:50,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:50,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:50,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:50,698 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:47:50,699 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:50,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:50,711 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 [2020-11-29 22:47:50,722 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:47:50,722 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:50,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:50,764 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:50,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:47:50,771 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:50,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:50,813 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:50,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:47:50,859 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:50,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:47:50,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=1}, {ULTIMATE.start_main_~y~0=0}] Lambdas: [2, 1, 2] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:50,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:50,919 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:50,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:47:50,970 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,013 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:47:51,016 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:47:51,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:47:51,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:47:51,017 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:47:51,017 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:47:51,017 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,017 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:47:51,017 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:47:51,017 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2020-11-29 22:47:51,018 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:47:51,018 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:47:51,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:51,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:51,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:51,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:51,164 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:47:51,169 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:51,178 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 [2020-11-29 22:47:51,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:51,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:51,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:51,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:51,190 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:47:51,190 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:51,251 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 [2020-11-29 22:47:51,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:51,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:51,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:51,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:51,261 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:47:51,262 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:51,315 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 [2020-11-29 22:47:51,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:51,318 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:47:51,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:51,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:51,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:51,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:47:51,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,323 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:51,368 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 [2020-11-29 22:47:51,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:51,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:47:51,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:51,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:51,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:51,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:47:51,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,375 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:47:51,380 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:47:51,380 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:51,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:47:51,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:47:51,389 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:47:51,390 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 101 Supporting invariants [] Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,429 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:47:51,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:51,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:47:51,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:51,539 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:47:51,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:47:51,580 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 [2020-11-29 22:47:51,581 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-11-29 22:47:51,633 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 25 states and 35 transitions. Complement of second has 7 states. [2020-11-29 22:47:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:47:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 22:47:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-11-29 22:47:51,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 22:47:51,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:51,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 22:47:51,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:51,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 22:47:51,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:51,656 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2020-11-29 22:47:51,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:47:51,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 11 states and 14 transitions. [2020-11-29 22:47:51,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 22:47:51,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 22:47:51,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2020-11-29 22:47:51,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:47:51,666 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-29 22:47:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2020-11-29 22:47:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-29 22:47:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 22:47:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-11-29 22:47:51,697 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-29 22:47:51,697 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-29 22:47:51,698 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:47:51,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-11-29 22:47:51,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:47:51,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:47:51,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:47:51,702 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 22:47:51,702 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:47:51,703 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 77#L18-2 assume !!(main_~y~0 >= 0); 73#L19 [2020-11-29 22:47:51,703 INFO L796 eck$LassoCheckResult]: Loop: 73#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 78#L19-2 main_~x~0 := 1 + main_~x~0; 72#L18-2 assume !!(main_~y~0 >= 0); 73#L19 [2020-11-29 22:47:51,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:51,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 22:47:51,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:51,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793990735] [2020-11-29 22:47:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:51,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:51,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:51,721 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:47:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:51,724 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 1 times [2020-11-29 22:47:51,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:51,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027412942] [2020-11-29 22:47:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:51,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:51,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:51,755 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:47:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:51,756 INFO L82 PathProgramCache]: Analyzing trace with hash 29865534, now seen corresponding path program 1 times [2020-11-29 22:47:51,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:51,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432254728] [2020-11-29 22:47:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:47:51,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432254728] [2020-11-29 22:47:51,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:47:51,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:47:51,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67295620] [2020-11-29 22:47:51,860 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:47:51,860 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:47:51,860 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:47:51,860 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:47:51,860 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:47:51,861 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,861 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:47:51,861 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:47:51,861 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2020-11-29 22:47:51,861 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:47:51,861 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:47:51,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:51,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:51,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:51,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:51,961 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:47:51,962 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:51,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:51,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:47:51,970 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:47:51,970 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-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:52,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:52,016 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,021 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:47:52,021 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-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:52,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:52,073 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:47:52,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:47:52,137 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:47:52,137 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=51} Honda state: {ULTIMATE.start_main_~x~0=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}] Lambdas: [3, 12, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/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 [2020-11-29 22:47:52,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:52,161 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/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 [2020-11-29 22:47:52,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:47:52,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:47:52,261 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:47:52,263 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:47:52,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:47:52,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:47:52,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:47:52,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:47:52,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,264 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:47:52,264 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:47:52,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2020-11-29 22:47:52,264 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:47:52,264 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:47:52,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:52,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:52,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:52,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:52,404 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:47:52,405 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:52,415 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 [2020-11-29 22:47:52,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:52,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:52,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:52,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:52,425 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:47:52,425 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,429 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,454 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 [2020-11-29 22:47:52,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:52,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:47:52,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:52,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:52,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:52,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:47:52,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:47:52,462 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,490 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 [2020-11-29 22:47:52,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:52,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:52,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:52,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:52,496 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:47:52,497 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:47:52,514 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:52,558 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 [2020-11-29 22:47:52,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:52,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:47:52,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:52,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:52,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:52,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:47:52,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:47:52,601 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:47:52,601 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:52,605 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:47:52,605 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:47:52,605 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:47:52,605 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,630 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:47:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:52,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:47:52,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:52,656 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:47:52,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:47:52,702 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 [2020-11-29 22:47:52,702 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 22:47:52,724 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 21 states and 26 transitions. Complement of second has 5 states. [2020-11-29 22:47:52,725 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 [2020-11-29 22:47:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:47:52,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 22:47:52,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-29 22:47:52,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:52,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 22:47:52,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:52,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-29 22:47:52,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:52,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2020-11-29 22:47:52,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:47:52,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2020-11-29 22:47:52,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 22:47:52,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 22:47:52,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2020-11-29 22:47:52,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:47:52,730 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-11-29 22:47:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2020-11-29 22:47:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2020-11-29 22:47:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 22:47:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-29 22:47:52,731 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-29 22:47:52,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:47:52,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:47:52,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:47:52,740 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2020-11-29 22:47:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:47:52,762 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-11-29 22:47:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:47:52,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2020-11-29 22:47:52,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:47:52,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2020-11-29 22:47:52,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 22:47:52,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 22:47:52,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2020-11-29 22:47:52,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:47:52,766 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-29 22:47:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2020-11-29 22:47:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-29 22:47:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 22:47:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-29 22:47:52,768 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-29 22:47:52,768 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-29 22:47:52,768 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:47:52,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2020-11-29 22:47:52,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:47:52,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:47:52,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:47:52,769 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-29 22:47:52,770 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:47:52,770 INFO L794 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 162#L18-2 assume !!(main_~y~0 >= 0); 163#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 171#L19-2 main_~x~0 := 1 + main_~x~0; 172#L18-2 assume !!(main_~y~0 >= 0); 170#L19 [2020-11-29 22:47:52,770 INFO L796 eck$LassoCheckResult]: Loop: 170#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 167#L19-2 main_~x~0 := 1 + main_~x~0; 168#L18-2 assume !!(main_~y~0 >= 0); 170#L19 [2020-11-29 22:47:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash 29863612, now seen corresponding path program 2 times [2020-11-29 22:47:52,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:52,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990822291] [2020-11-29 22:47:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:52,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:52,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:52,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:47:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:52,806 INFO L82 PathProgramCache]: Analyzing trace with hash 44743, now seen corresponding path program 2 times [2020-11-29 22:47:52,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:52,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833871621] [2020-11-29 22:47:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:52,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:47:52,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:47:52,819 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:47:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash 608649772, now seen corresponding path program 1 times [2020-11-29 22:47:52,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:47:52,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911675846] [2020-11-29 22:47:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:47:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:47:52,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911675846] [2020-11-29 22:47:52,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089209539] [2020-11-29 22:47:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 22:47:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:52,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:47:52,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:47:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:47:52,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:47:52,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-29 22:47:52,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971951879] [2020-11-29 22:47:52,927 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:47:52,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:47:52,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:47:52,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:47:52,927 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:47:52,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:52,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:47:52,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:47:52,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2020-11-29 22:47:52,928 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:47:52,928 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:47:52,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:52,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:52,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:52,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:53,043 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:47:53,044 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:53,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:47:53,049 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:53,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:47:53,091 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:53,180 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:47:53,183 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:47:53,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:47:53,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:47:53,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:47:53,183 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:47:53,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:53,183 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:47:53,183 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:47:53,183 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2020-11-29 22:47:53,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:47:53,184 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:47:53,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:53,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:53,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:53,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:47:53,313 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:47:53,313 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:53,320 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 [2020-11-29 22:47:53,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:47:53,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:47:53,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:47:53,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:47:53,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:47:53,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:47:53,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:53,334 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:47:53,337 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 22:47:53,337 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9708b7dd-52cb-449a-9acf-17fd8276fbb4/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:47:53,341 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:47:53,341 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:47:53,342 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:47:53,342 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:47:53,373 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:47:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:53,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:47:53,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:53,413 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:47:53,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:47:53,429 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 [2020-11-29 22:47:53,429 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 22:47:53,435 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2020-11-29 22:47:53,438 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 [2020-11-29 22:47:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:47:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2020-11-29 22:47:53,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 22:47:53,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:53,439 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:47:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:53,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:47:53,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:53,475 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:47:53,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:47:53,492 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 [2020-11-29 22:47:53,492 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 22:47:53,498 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2020-11-29 22:47:53,499 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 [2020-11-29 22:47:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:47:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2020-11-29 22:47:53,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 22:47:53,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:53,500 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:47:53,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:47:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:53,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:47:53,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:47:53,536 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:47:53,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:47:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:47:53,550 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 [2020-11-29 22:47:53,550 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 22:47:53,583 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2020-11-29 22:47:53,584 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 [2020-11-29 22:47:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:47:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 22:47:53,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-29 22:47:53,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:53,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-29 22:47:53,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:53,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-29 22:47:53,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:47:53,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2020-11-29 22:47:53,587 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:47:53,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2020-11-29 22:47:53,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:47:53,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:47:53,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:47:53,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:47:53,588 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:47:53,588 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:47:53,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:47:53,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:47:53,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:47:53,589 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-11-29 22:47:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:47:53,589 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 22:47:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:47:53,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 22:47:53,590 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:47:53,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:47:53,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:47:53,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:47:53,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:47:53,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:47:53,591 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:47:53,591 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:47:53,591 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:47:53,591 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:47:53,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:47:53,591 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:47:53,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 22:47:53,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:47:53 BoogieIcfgContainer [2020-11-29 22:47:53,598 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:47:53,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:47:53,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:47:53,599 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:47:53,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:47:49" (3/4) ... [2020-11-29 22:47:53,602 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:47:53,602 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:47:53,604 INFO L168 Benchmark]: Toolchain (without parser) took 4193.90 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 76.8 MB in the beginning and 68.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:47:53,604 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory was 46.8 MB in the beginning and 46.7 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:47:53,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.13 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:47:53,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.23 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 74.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:47:53,606 INFO L168 Benchmark]: Boogie Preprocessor took 30.69 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 73.2 MB in the end (delta: 832.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:47:53,606 INFO L168 Benchmark]: RCFGBuilder took 220.27 ms. Allocated memory is still 100.7 MB. Free memory was 73.0 MB in the beginning and 65.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:47:53,607 INFO L168 Benchmark]: BuchiAutomizer took 3651.38 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 65.2 MB in the beginning and 68.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:47:53,607 INFO L168 Benchmark]: Witness Printer took 3.92 ms. Allocated memory is still 121.6 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:47:53,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory was 46.8 MB in the beginning and 46.7 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.13 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.23 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 74.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.69 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 73.2 MB in the end (delta: 832.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 220.27 ms. Allocated memory is still 100.7 MB. Free memory was 73.0 MB in the beginning and 65.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3651.38 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 65.2 MB in the beginning and 68.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.92 ms. Allocated memory is still 121.6 MB. Free memory is still 68.2 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 101 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 13 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...