./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.17.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_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.17.c -s /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 4c1132cbc7f5ece5e256e1f8dfde86f3ca50a733 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 18:18:05,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:18:05,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:18:06,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:18:06,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:18:06,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:18:06,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:18:06,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:18:06,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:18:06,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:18:06,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:18:06,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:18:06,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:18:06,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:18:06,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:18:06,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:18:06,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:18:06,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:18:06,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:18:06,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:18:06,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:18:06,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:18:06,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:18:06,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:18:06,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:18:06,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:18:06,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:18:06,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:18:06,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:18:06,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:18:06,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:18:06,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:18:06,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:18:06,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:18:06,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:18:06,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:18:06,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:18:06,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:18:06,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:18:06,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:18:06,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:18:06,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 18:18:06,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:18:06,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:18:06,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:18:06,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:18:06,169 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:18:06,169 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:18:06,169 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:18:06,169 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:18:06,170 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:18:06,170 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:18:06,170 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:18:06,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:18:06,170 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:18:06,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:18:06,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:18:06,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:18:06,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:18:06,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:18:06,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:18:06,172 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:18:06,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:18:06,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:18:06,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:18:06,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:18:06,173 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:18:06,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:18:06,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:18:06,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:18:06,174 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:18:06,175 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:18:06,175 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_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c1132cbc7f5ece5e256e1f8dfde86f3ca50a733 [2020-11-29 18:18:06,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:18:06,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:18:06,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:18:06,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:18:06,450 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:18:06,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.17.c [2020-11-29 18:18:06,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/data/3a041e92d/5ea9c4369cf043208e3b361e4ee31e7e/FLAG639c1c0cf [2020-11-29 18:18:07,033 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:18:07,035 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/sv-benchmarks/c/termination-restricted-15/b.17.c [2020-11-29 18:18:07,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/data/3a041e92d/5ea9c4369cf043208e3b361e4ee31e7e/FLAG639c1c0cf [2020-11-29 18:18:07,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/bin/uautomizer/data/3a041e92d/5ea9c4369cf043208e3b361e4ee31e7e [2020-11-29 18:18:07,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:18:07,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:18:07,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:18:07,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:18:07,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:18:07,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6a17ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07, skipping insertion in model container [2020-11-29 18:18:07,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:18:07,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:18:07,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:18:07,644 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:18:07,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:18:07,688 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:18:07,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07 WrapperNode [2020-11-29 18:18:07,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:18:07,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:18:07,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:18:07,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:18:07,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:18:07,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:18:07,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:18:07,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:18:07,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... [2020-11-29 18:18:07,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:18:07,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:18:07,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:18:07,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:18:07,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:18:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:18:08,001 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:18:08,002 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 18:18:08,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:18:08 BoogieIcfgContainer [2020-11-29 18:18:08,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:18:08,007 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:18:08,007 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:18:08,011 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:18:08,012 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:18:08,012 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:18:07" (1/3) ... [2020-11-29 18:18:08,013 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c51b215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:18:08, skipping insertion in model container [2020-11-29 18:18:08,014 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:18:08,014 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:18:07" (2/3) ... [2020-11-29 18:18:08,014 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c51b215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:18:08, skipping insertion in model container [2020-11-29 18:18:08,014 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:18:08,015 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:18:08" (3/3) ... [2020-11-29 18:18:08,016 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.17.c [2020-11-29 18:18:08,080 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:18:08,080 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:18:08,080 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:18:08,080 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:18:08,080 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:18:08,080 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:18:08,080 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:18:08,080 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:18:08,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 18:18:08,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:18:08,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:18:08,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:18:08,109 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 18:18:08,109 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:18:08,109 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:18:08,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 18:18:08,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:18:08,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:18:08,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:18:08,111 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 18:18:08,111 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:18:08,117 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 3#L12-2true [2020-11-29 18:18:08,118 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~x~0 > main_~z~0); 6#L13-2true assume !(main_~y~0 > main_~z~0); 4#L13-3true main_~x~0 := main_~x~0 - 1; 3#L12-2true [2020-11-29 18:18:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:18:08,124 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 18:18:08,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:18:08,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153991552] [2020-11-29 18:18:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:18:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:08,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:08,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:08,222 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:18:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:18:08,224 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-29 18:18:08,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:18:08,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870244274] [2020-11-29 18:18:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:18:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:08,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:08,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:08,242 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:18:08,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:18:08,248 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-29 18:18:08,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:18:08,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192888379] [2020-11-29 18:18:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:18:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:08,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:08,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:08,275 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:18:08,422 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 18:18:08,432 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:18:08,432 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:18:08,443 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:18:08,443 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:18:08,444 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:18:08,444 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:08,444 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:18:08,444 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:18:08,444 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.17.c_Iteration1_Loop [2020-11-29 18:18:08,445 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:18:08,445 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:18:08,479 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 18:18:08,492 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 18:18:08,497 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 18:18:08,613 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:18:08,615 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:08,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:18:08,623 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 18:18:08,637 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:18:08,638 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_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:08,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:18:08,681 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 18:18:08,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:18:08,689 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_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:08,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:18:08,732 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_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:08,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:08,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:18:09,082 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:18:09,084 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:18:09,084 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:18:09,084 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:18:09,084 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:18:09,085 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:18:09,085 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:09,085 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:18:09,085 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:18:09,085 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.17.c_Iteration1_Loop [2020-11-29 18:18:09,085 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:18:09,085 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:18:09,087 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 18:18:09,109 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 18:18:09,114 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 18:18:09,228 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:18:09,232 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:09,245 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:09,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:18:09,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:18:09,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:18:09,248 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:18:09,259 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:18:09,260 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 18:18:09,272 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:09,316 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 18:18:09,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:18:09,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:18:09,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:18:09,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:18:09,328 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:18:09,329 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:09,335 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:09,377 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 18:18:09,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:18:09,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:18:09,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:18:09,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:18:09,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:18:09,384 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:18:09,384 INFO L402 nArgumentSynthesizer]: A total of 0 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 18:18:09,391 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:18:09,396 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:18:09,396 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:09,406 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:18:09,406 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:18:09,406 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:18:09,407 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:09,447 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:18:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:18:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:18:09,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:18:09,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:18:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:18:09,504 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:18:09,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:18:09,529 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 18:18:09,544 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 18:18:09,545 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 18:18:09,594 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-11-29 18:18:09,594 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 18:18:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 18:18:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 18:18:09,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 18:18:09,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:18:09,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 18:18:09,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:18:09,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 18:18:09,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:18:09,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-11-29 18:18:09,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 18:18:09,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-29 18:18:09,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 18:18:09,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 18:18:09,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 18:18:09,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:18:09,608 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 18:18:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 18:18:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-29 18:18:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 18:18:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-29 18:18:09,634 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 18:18:09,634 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 18:18:09,634 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:18:09,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-11-29 18:18:09,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 18:18:09,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:18:09,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:18:09,635 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 18:18:09,635 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 18:18:09,636 INFO L794 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 70#L12-2 assume !!(main_~x~0 > main_~z~0); 72#L13-2 [2020-11-29 18:18:09,636 INFO L796 eck$LassoCheckResult]: Loop: 72#L13-2 assume !!(main_~y~0 > main_~z~0);main_~y~0 := main_~y~0 - 1; 72#L13-2 [2020-11-29 18:18:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:18:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 18:18:09,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:18:09,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732749067] [2020-11-29 18:18:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:18:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:09,642 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:09,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:09,648 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:18:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:18:09,648 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-29 18:18:09,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:18:09,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468060786] [2020-11-29 18:18:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:18:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:09,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:09,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:09,657 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:18:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:18:09,658 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-29 18:18:09,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:18:09,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50068443] [2020-11-29 18:18:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:18:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:09,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:18:09,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:18:09,671 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:18:09,687 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:18:09,687 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:18:09,687 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:18:09,687 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:18:09,687 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:18:09,687 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:09,688 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:18:09,688 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:18:09,688 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.17.c_Iteration2_Loop [2020-11-29 18:18:09,688 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:18:09,688 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:18:09,689 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 18:18:09,695 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 18:18:09,701 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 18:18:09,742 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:18:09,743 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:09,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:18:09,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:18:09,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:18:09,780 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_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:09,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:18:09,822 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:09,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:18:09,872 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:10,047 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:18:10,049 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:18:10,049 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:18:10,049 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:18:10,049 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:18:10,050 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:18:10,050 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:10,050 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:18:10,050 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:18:10,050 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.17.c_Iteration2_Loop [2020-11-29 18:18:10,050 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:18:10,050 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:18:10,051 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 18:18:10,057 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 18:18:10,075 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 18:18:10,139 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:18:10,139 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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) [2020-11-29 18:18:10,146 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 18:18:10,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:18:10,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:18:10,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:18:10,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:18:10,158 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 18:18:10,159 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:10,167 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:10,212 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 18:18:10,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:18:10,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:18:10,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:18:10,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:18:10,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:18:10,218 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:18:10,218 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:10,221 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:18:10,257 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:18:10,257 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_faa9f76a-f4d7-4aa4-b12e-ce814be50580/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 18:18:10,266 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:18:10,266 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:18:10,266 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:18:10,267 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:18:10,302 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:18:10,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:18:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:18:10,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:18:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:18:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:18:10,362 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:18:10,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:18:10,362 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 18:18:10,363 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 18:18:10,363 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-29 18:18:10,376 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 4 states. [2020-11-29 18:18:10,378 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 18:18:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 18:18:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-29 18:18:10,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-29 18:18:10,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:18:10,379 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-29 18:18:10,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:18:10,379 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 18:18:10,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:18:10,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-11-29 18:18:10,380 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:18:10,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2020-11-29 18:18:10,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:18:10,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:18:10,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:18:10,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:18:10,381 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:18:10,381 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:18:10,381 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:18:10,381 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:18:10,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:18:10,381 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:18:10,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 18:18:10,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:18:10 BoogieIcfgContainer [2020-11-29 18:18:10,392 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:18:10,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:18:10,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:18:10,393 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:18:10,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:18:08" (3/4) ... [2020-11-29 18:18:10,396 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:18:10,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:18:10,403 INFO L168 Benchmark]: Toolchain (without parser) took 3008.64 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 78.9 MB in the end (delta: -2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:18:10,404 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 44.9 MB in the beginning and 44.9 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:18:10,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.81 ms. Allocated memory is still 107.0 MB. Free memory was 76.5 MB in the beginning and 86.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:18:10,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.61 ms. Allocated memory is still 107.0 MB. Free memory was 86.8 MB in the beginning and 85.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:18:10,405 INFO L168 Benchmark]: Boogie Preprocessor took 15.74 ms. Allocated memory is still 107.0 MB. Free memory was 85.3 MB in the beginning and 84.7 MB in the end (delta: 609.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:18:10,406 INFO L168 Benchmark]: RCFGBuilder took 257.38 ms. Allocated memory is still 107.0 MB. Free memory was 84.5 MB in the beginning and 76.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:18:10,407 INFO L168 Benchmark]: BuchiAutomizer took 2384.54 ms. Allocated memory is still 107.0 MB. Free memory was 75.5 MB in the beginning and 79.7 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:18:10,408 INFO L168 Benchmark]: Witness Printer took 9.02 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.9 MB in the end (delta: 855.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:18:10,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 44.9 MB in the beginning and 44.9 MB in the end (delta: 43.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.81 ms. Allocated memory is still 107.0 MB. Free memory was 76.5 MB in the beginning and 86.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.61 ms. Allocated memory is still 107.0 MB. Free memory was 86.8 MB in the beginning and 85.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.74 ms. Allocated memory is still 107.0 MB. Free memory was 85.3 MB in the beginning and 84.7 MB in the end (delta: 609.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 257.38 ms. Allocated memory is still 107.0 MB. Free memory was 84.5 MB in the beginning and 76.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2384.54 ms. Allocated memory is still 107.0 MB. Free memory was 75.5 MB in the beginning and 79.7 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 9.02 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.9 MB in the end (delta: 855.3 kB). Peak memory consumption was 2.1 MB. 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 5 locations. One deterministic module has affine ranking function y + -1 * z and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 13 SDslu, 7 SDs, 0 SdLazy, 15 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...