./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.07.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_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.07.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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 a3a1315287b984b6ff3d1521ef67a642a499a933 ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:07,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:07,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:07,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:07,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:07,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:07,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:07,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:07,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:07,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:07,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:07,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:07,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:07,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:07,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:07,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:07,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:07,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:07,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:07,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:07,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:07,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:07,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:07,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:07,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:07,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:07,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:07,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:07,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:07,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:07,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:07,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:07,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:07,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:07,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:07,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:07,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:07,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:07,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:07,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:07,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:07,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:57:07,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:07,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:07,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:07,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:07,780 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:07,781 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:57:07,781 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:57:07,781 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:57:07,781 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:57:07,782 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:57:07,783 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:57:07,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:07,783 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:57:07,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:07,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:07,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:57:07,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:57:07,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:57:07,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:07,785 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:57:07,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:07,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:57:07,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:07,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:07,786 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:57:07,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:07,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:07,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:07,787 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:57:07,789 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:57:07,790 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_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3a1315287b984b6ff3d1521ef67a642a499a933 [2020-11-28 02:57:08,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:08,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:08,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:08,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:08,151 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:08,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.07.c [2020-11-28 02:57:08,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/data/f150d5d14/44e68c1db3c24c8384784ccfe6bcd289/FLAGbc11a697c [2020-11-28 02:57:08,794 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:08,795 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/sv-benchmarks/c/termination-restricted-15/b.07.c [2020-11-28 02:57:08,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/data/f150d5d14/44e68c1db3c24c8384784ccfe6bcd289/FLAGbc11a697c [2020-11-28 02:57:09,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/bin/uautomizer/data/f150d5d14/44e68c1db3c24c8384784ccfe6bcd289 [2020-11-28 02:57:09,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:09,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:09,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:09,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:09,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:09,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fb6608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09, skipping insertion in model container [2020-11-28 02:57:09,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:09,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:09,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:09,380 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:09,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:09,416 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:09,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09 WrapperNode [2020-11-28 02:57:09,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:09,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:09,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:09,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:09,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:09,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:09,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:09,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:09,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:09,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:09,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:09,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:09,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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 [2020-11-28 02:57:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:09,701 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:09,701 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:57:09,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:09 BoogieIcfgContainer [2020-11-28 02:57:09,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:09,704 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:57:09,705 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:57:09,709 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:57:09,710 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:09,710 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:09" (1/3) ... [2020-11-28 02:57:09,712 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a8320d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:09, skipping insertion in model container [2020-11-28 02:57:09,712 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:09,712 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (2/3) ... [2020-11-28 02:57:09,712 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a8320d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:09, skipping insertion in model container [2020-11-28 02:57:09,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:09,713 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:09" (3/3) ... [2020-11-28 02:57:09,714 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.07.c [2020-11-28 02:57:09,776 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:57:09,776 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:57:09,776 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:57:09,776 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:09,776 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:09,776 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:57:09,776 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:09,777 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:57:09,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 02:57:09,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:57:09,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:09,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:09,811 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:57:09,811 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:57:09,811 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:57:09,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 02:57:09,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:57:09,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:09,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:09,813 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:57:09,813 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:57:09,820 INFO L794 eck$LassoCheckResult]: Stem: 4#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 [2020-11-28 02:57:09,820 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~x~0 > main_~z~0 && main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 3#L12-2true [2020-11-28 02:57:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:09,827 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 02:57:09,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:09,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576428583] [2020-11-28 02:57:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:09,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:09,942 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:09,963 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:09,967 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-28 02:57:09,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:09,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072905116] [2020-11-28 02:57:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:09,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,011 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:10,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:10,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 02:57:10,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:10,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127430586] [2020-11-28 02:57:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:10,103 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:10,104 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:10,104 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:10,104 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:10,104 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:57:10,105 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:10,105 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:10,105 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:10,105 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.07.c_Iteration1_Loop [2020-11-28 02:57:10,105 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:10,106 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:10,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:10,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:10,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:10,417 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:10,420 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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) [2020-11-28 02:57:10,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:10,427 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 [2020-11-28 02:57:10,440 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:57:10,440 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_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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) [2020-11-28 02:57:10,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:10,486 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 [2020-11-28 02:57:10,494 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:57:10,494 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_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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) [2020-11-28 02:57:10,541 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:57:10,541 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_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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) [2020-11-28 02:57:10,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:57:10,586 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 [2020-11-28 02:57:10,894 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:57:10,896 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:10,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:10,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:10,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:10,896 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:10,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:10,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:10,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:10,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.07.c_Iteration1_Loop [2020-11-28 02:57:10,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:10,897 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:10,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:10,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:10,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:11,106 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:11,111 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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) [2020-11-28 02:57:11,165 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 [2020-11-28 02:57:11,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:11,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:11,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:11,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:11,173 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:11,173 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:57:11,179 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:11,214 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 [2020-11-28 02:57:11,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:11,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:11,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:11,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:11,220 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:11,220 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:57:11,228 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:11,259 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 [2020-11-28 02:57:11,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:11,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:11,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:11,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:11,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:11,264 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:11,265 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:57:11,270 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:11,284 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-28 02:57:11,285 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cbe221c6-ab08-4074-a404-d5d0dd4aa0eb/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) [2020-11-28 02:57:11,291 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:57:11,291 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:57:11,292 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:11,292 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~z~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:11,323 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:57:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:11,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:11,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:11,384 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:11,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:11,397 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 [2020-11-28 02:57:11,399 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2020-11-28 02:57:11,455 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states.. Second operand 2 states. Result 15 states and 18 transitions. Complement of second has 5 states. [2020-11-28 02:57:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:57:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 02:57:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-28 02:57:11,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2020-11-28 02:57:11,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:11,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-28 02:57:11,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:11,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 02:57:11,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:11,463 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-11-28 02:57:11,465 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:57:11,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2020-11-28 02:57:11,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:57:11,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:57:11,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:57:11,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:11,469 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:11,469 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:11,469 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:11,469 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:57:11,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:11,470 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:57:11,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:57:11,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:11 BoogieIcfgContainer [2020-11-28 02:57:11,474 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:57:11,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:11,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:11,475 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:11,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:09" (3/4) ... [2020-11-28 02:57:11,483 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:57:11,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:11,486 INFO L168 Benchmark]: Toolchain (without parser) took 2318.06 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 56.2 MB in the end (delta: 26.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:11,488 INFO L168 Benchmark]: CDTParser took 1.09 ms. Allocated memory is still 86.0 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:11,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.48 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 90.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:11,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.69 ms. Allocated memory is still 111.1 MB. Free memory was 90.4 MB in the beginning and 89.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:11,493 INFO L168 Benchmark]: Boogie Preprocessor took 17.56 ms. Allocated memory is still 111.1 MB. Free memory was 89.3 MB in the beginning and 88.4 MB in the end (delta: 872.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:11,495 INFO L168 Benchmark]: RCFGBuilder took 237.78 ms. Allocated memory is still 111.1 MB. Free memory was 88.4 MB in the beginning and 80.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:11,496 INFO L168 Benchmark]: BuchiAutomizer took 1769.62 ms. Allocated memory is still 111.1 MB. Free memory was 80.1 MB in the beginning and 56.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:11,497 INFO L168 Benchmark]: Witness Printer took 8.54 ms. Allocated memory is still 111.1 MB. Free memory was 56.8 MB in the beginning and 56.2 MB in the end (delta: 595.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:11,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09 ms. Allocated memory is still 86.0 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.48 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 90.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.69 ms. Allocated memory is still 111.1 MB. Free memory was 90.4 MB in the beginning and 89.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.56 ms. Allocated memory is still 111.1 MB. Free memory was 89.3 MB in the beginning and 88.4 MB in the end (delta: 872.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 237.78 ms. Allocated memory is still 111.1 MB. Free memory was 88.4 MB in the beginning and 80.5 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1769.62 ms. Allocated memory is still 111.1 MB. Free memory was 80.1 MB in the beginning and 56.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 8.54 ms. Allocated memory is still 111.1 MB. Free memory was 56.8 MB in the beginning and 56.2 MB in the end (delta: 595.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * z + y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf93 smp100 dnf100 smp100 tf107 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 66ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...